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These are the user uploaded subtitles that are being translated: 1 00:00:03,570 --> 00:00:06,139 In a world where only the fittest survive, 2 00:00:06,173 --> 00:00:09,777 millions of years of evolution have equipped a lucky few 3 00:00:09,810 --> 00:00:14,882 with extreme adaptations and formidable features. 4 00:00:14,915 --> 00:00:16,483 It's an endless showdown, 5 00:00:16,517 --> 00:00:19,553 and you're about to get a front row seat. 6 00:00:19,586 --> 00:00:21,855 This adventure isn't for the squeamish 7 00:00:21,889 --> 00:00:24,291 or the faint of heart. 8 00:00:24,324 --> 00:00:26,993 from arid deserts to the deepest oceans, 9 00:00:27,027 --> 00:00:28,362 we'll be counting down 10 00:00:28,395 --> 00:00:31,565 some of the greatest wildlife moments ever captured... 11 00:00:36,470 --> 00:00:40,074 when life in the wild reaches a fever pitch... 12 00:00:40,107 --> 00:00:42,276 And when the most daring risk all 13 00:00:42,309 --> 00:00:45,846 to ensure the survival of the next generation. 14 00:00:45,879 --> 00:00:48,815 these incredible scenes will compete for the title 15 00:00:48,849 --> 00:00:50,784 of most amazing moment. 16 00:00:50,817 --> 00:00:54,287 coming at you in five jaw-dropping categories: 17 00:00:54,321 --> 00:00:55,923 Deadly showdowns... 18 00:00:55,956 --> 00:00:57,624 Freaks of nature... 19 00:00:57,658 --> 00:00:59,059 Gang wars... 20 00:00:59,092 --> 00:01:01,127 Rough romance... 21 00:01:01,161 --> 00:01:03,563 And extreme parenting. 22 00:01:03,597 --> 00:01:06,300 Get ready for a wild ride, 23 00:01:06,333 --> 00:01:07,634 coming up now 24 00:01:07,668 --> 00:01:10,437 incredible animal moments. 25 00:01:17,911 --> 00:01:19,513 The animal kingdom... 26 00:01:19,546 --> 00:01:24,851 a world where predators rule and prey flee for their lives. 27 00:01:24,885 --> 00:01:26,553 those at the top of the food chain 28 00:01:26,587 --> 00:01:30,458 have killer moves and extraordinary features... 29 00:01:30,490 --> 00:01:32,525 Fearsome fangs... 30 00:01:32,559 --> 00:01:34,461 Supersonic speed... 31 00:01:34,494 --> 00:01:36,296 And deadly precision. 32 00:01:38,899 --> 00:01:40,834 It's a battle of the extremes, 33 00:01:40,867 --> 00:01:45,171 and we're counting down the world's deadliest showdowns. 34 00:01:50,577 --> 00:01:53,580 Making a debut in our countdown at number 5 35 00:01:53,614 --> 00:01:56,550 is the killer everyone loves to hate. 36 00:02:01,588 --> 00:02:04,591 This ancient hunter has ruled these watery depths 37 00:02:04,625 --> 00:02:07,628 for over 450 million years. 38 00:02:10,697 --> 00:02:14,501 It's outlived the dinosaur and five mass extinctions, 39 00:02:14,534 --> 00:02:16,736 yet this highly evolved super fish 40 00:02:16,770 --> 00:02:19,673 continues to be vilified. 41 00:02:19,706 --> 00:02:21,708 Jaws 42 00:02:21,742 --> 00:02:25,312 depicted the shark as a mindless killer, 43 00:02:25,345 --> 00:02:27,080 but in this real-life drama 44 00:02:27,114 --> 00:02:30,184 the great white is cunning and calculating. 45 00:02:37,324 --> 00:02:40,360 when hunting seals off the coast of South Africa, 46 00:02:40,394 --> 00:02:42,830 this female's highly evolved senses 47 00:02:42,863 --> 00:02:45,733 lead her to her next victim. 48 00:02:50,003 --> 00:02:53,039 when the colony leaves the safety of their rocky island, 49 00:02:53,073 --> 00:02:55,876 not a single splash goes unheard. 50 00:03:04,851 --> 00:03:07,854 the great white's nostrils can detect a drop of seal oil 51 00:03:07,888 --> 00:03:09,356 in a body of water 52 00:03:09,389 --> 00:03:12,959 the equivalent of an olympic-sized swimming pool! 53 00:03:17,531 --> 00:03:20,401 Tiny jelly-filled pores on her nose 54 00:03:20,434 --> 00:03:23,537 can absorb minute electrical pulses... 55 00:03:27,340 --> 00:03:29,275 Meaning this fishy beast 56 00:03:29,309 --> 00:03:32,612 can home in on a single seal's heartbeat. 57 00:03:34,915 --> 00:03:36,583 This super predator's eyes 58 00:03:36,616 --> 00:03:39,686 are also five times the size of ours, 59 00:03:39,720 --> 00:03:42,423 and behind each retina lie crystal plates 60 00:03:42,456 --> 00:03:45,826 that reflect light in the murky water. 61 00:03:49,629 --> 00:03:52,465 Once you're on the radar, there's nowhere to hide 62 00:03:52,499 --> 00:03:55,836 from this highly evolved master of the deep. 63 00:04:26,533 --> 00:04:29,136 This is the crowned king of speed. 64 00:04:31,638 --> 00:04:34,174 Cheetahs are the fastest animals on the planet, 65 00:04:34,207 --> 00:04:37,077 and these brothers are on the hunt. 66 00:04:37,110 --> 00:04:39,412 On today's menu, wildebeest, 67 00:04:39,446 --> 00:04:42,783 one of africa's fastest antelopes. 68 00:04:42,816 --> 00:04:44,651 The brothers can outrun them, 69 00:04:44,684 --> 00:04:48,154 but they're sprinters, not distance runners. 70 00:04:48,188 --> 00:04:49,890 They can easily overheat 71 00:04:49,923 --> 00:04:52,192 and must get close enough to close the deal 72 00:04:52,225 --> 00:04:56,096 before they explode into action. 73 00:04:56,129 --> 00:04:58,398 These impressive runners can reach top speeds 74 00:04:58,431 --> 00:05:01,601 of 75 miles per hour, 75 00:05:01,635 --> 00:05:06,073 but their acceleration is what's truly impressive. 76 00:05:06,106 --> 00:05:10,611 Zero to 60 in three seconds... or just three strides. 77 00:05:29,162 --> 00:05:33,733 This round goes to the sprite and spindly wildebeest. 78 00:05:33,767 --> 00:05:37,938 the cat is no quitter, but he needs to catch his breath. 79 00:05:37,971 --> 00:05:39,639 the wildebeest are on the move, 80 00:05:39,673 --> 00:05:41,975 and the brothers must go for broke. 81 00:05:51,418 --> 00:05:53,287 They dig their specialized claws 82 00:05:53,320 --> 00:05:55,289 into the heels of the wildebeest. 83 00:06:02,562 --> 00:06:07,167 the brothers live up to their 50% strike rate. 84 00:06:07,200 --> 00:06:09,769 Half their hunts end in success; 85 00:06:09,803 --> 00:06:14,608 the other half are dangerous life lessons. 86 00:06:14,641 --> 00:06:20,113 Theirs is a delicate balance between risk and reward. 87 00:06:23,283 --> 00:06:26,086 In the Namibian desert, one remarkable animal 88 00:06:26,119 --> 00:06:30,490 has developed a unique predatory strategy. 89 00:06:30,523 --> 00:06:32,025 This is the caracal... 90 00:06:32,058 --> 00:06:35,428 A distant relative of the lynx. 91 00:06:35,462 --> 00:06:39,566 She may be slight, but this cat's got a killer plan... 92 00:06:45,772 --> 00:06:49,342 muscle-packed hind legs and a super flexible spine 93 00:06:49,376 --> 00:06:54,147 allow her to jump like an acrobat off a springboard... 94 00:06:54,180 --> 00:06:56,783 More than six feet in the air. 95 00:07:03,723 --> 00:07:06,292 At a small watering hole, a flock of weavers 96 00:07:06,326 --> 00:07:09,930 provides a perfect opportunity for this remarkable athlete. 97 00:07:13,533 --> 00:07:15,001 She's off. 98 00:07:21,074 --> 00:07:24,844 The caracal's powerful hind legs and finely tuned reflexes 99 00:07:24,878 --> 00:07:28,749 make her agile. 100 00:07:28,782 --> 00:07:30,317 The weaver's fast, 101 00:07:30,350 --> 00:07:32,986 but this feline's locked her sights on it. 102 00:08:11,591 --> 00:08:15,595 It's over in seconds... 103 00:08:15,628 --> 00:08:19,599 And for now, this feathery snack will have to do. 104 00:08:24,437 --> 00:08:25,838 In a nearby desert, 105 00:08:25,872 --> 00:08:29,442 this yellow mongoose is the resident cobra hitman. 106 00:08:33,546 --> 00:08:35,248 It's game on. 107 00:08:40,320 --> 00:08:43,290 A strike from a cobra could kill ten men. 108 00:08:43,323 --> 00:08:44,658 But this desert carnivore 109 00:08:44,691 --> 00:08:48,895 has guts of steel and built-in immunity. 110 00:08:50,263 --> 00:08:53,833 The cobra's speedy defense strike is its trump card... 111 00:08:53,867 --> 00:08:57,003 the only thing that'll keep him alive. 112 00:08:58,471 --> 00:09:00,306 Each is the other's prey, 113 00:09:00,340 --> 00:09:04,277 but also a deadly opponent. 114 00:09:04,310 --> 00:09:09,015 they know that turning their back could be a fatal mistake. 115 00:09:09,049 --> 00:09:10,450 The mongoose circles, 116 00:09:10,483 --> 00:09:13,720 looking for a weakness in the cobra's defense. 117 00:09:17,590 --> 00:09:21,394 a quick strike needs a matrix-style getaway. 118 00:09:35,075 --> 00:09:39,880 The cobra tries intimidation... But it's not enough. 119 00:09:39,913 --> 00:09:44,251 They size each other up... and punches fly! 120 00:09:44,284 --> 00:09:47,154 The cobra delivers its winning blow. 121 00:09:53,827 --> 00:09:56,697 He's been spared from becoming mongoose dinner... 122 00:09:56,729 --> 00:09:58,531 This time around. 123 00:10:00,667 --> 00:10:04,337 Now for the ultimate face-off. 124 00:10:04,370 --> 00:10:06,772 Coming in at number 1 in this category 125 00:10:06,806 --> 00:10:08,808 is an unlikely contender, 126 00:10:08,842 --> 00:10:12,879 yet this gang of intrepid heifers won't disappoint. 127 00:10:15,615 --> 00:10:18,485 the Savannah is set for the hunger games... 128 00:10:18,518 --> 00:10:21,654 the age-old contest between hunter and hunted. 129 00:10:24,491 --> 00:10:27,327 At the top of the food chain, the lions... 130 00:10:27,360 --> 00:10:30,063 the biggest, baddest cats around. 131 00:10:30,096 --> 00:10:32,832 but word on the plains is that the cape buffalo 132 00:10:32,866 --> 00:10:35,936 is the most dangerous beast in the game... 133 00:10:35,969 --> 00:10:39,372 An adult bull can weigh up to 2,000 pounds! 134 00:10:41,841 --> 00:10:45,011 with a helmet of horns and deadly, sharp hooves, 135 00:10:45,044 --> 00:10:46,579 they are perfectly equipped 136 00:10:46,613 --> 00:10:49,449 to be the lion's greatest adversary. 137 00:10:52,652 --> 00:10:57,690 they're built to kill... Like an army of gladiators. 138 00:10:57,724 --> 00:11:00,894 none of the other cats will take on a buffalo, 139 00:11:00,927 --> 00:11:04,564 but to these famished lions, they're irresistible. 140 00:11:14,507 --> 00:11:18,878 When the going gets tough, this angry gang defends their own. 141 00:11:28,721 --> 00:11:30,990 Without backup, a lone lioness 142 00:11:31,024 --> 00:11:33,660 is no match for this deadly showdown 143 00:11:33,693 --> 00:11:37,197 and the angriest beasts on the Savannah. 144 00:11:38,932 --> 00:11:41,701 next on incredible animal moments, 145 00:11:41,734 --> 00:11:46,606 we count down nature's freakiest and most curious creatures. 146 00:11:49,709 --> 00:11:54,414 So far we've seen killer moves and deadly showdowns. 147 00:11:54,447 --> 00:11:58,785 Now, for the strange and the bizarre. 148 00:11:58,818 --> 00:12:00,953 these characters are quick killers, 149 00:12:00,987 --> 00:12:06,159 masters of disguise, kings and queens of camouflage. 150 00:12:06,192 --> 00:12:10,029 evolution has equipped them with some peculiar adaptations. 151 00:12:10,063 --> 00:12:13,266 and these daredevils will leave you speechless. 152 00:12:18,071 --> 00:12:20,540 In the dense canopy of the Asian jungle, 153 00:12:20,573 --> 00:12:23,776 a swift killer lies in wait. 154 00:12:23,810 --> 00:12:26,780 in plain sight... But virtually invisible... 155 00:12:26,813 --> 00:12:30,283 It's a master of disguise. 156 00:12:30,316 --> 00:12:33,419 With its zen-like appearance of quizzical intelligence, 157 00:12:33,453 --> 00:12:35,755 it's not surprising that the praying mantis 158 00:12:35,788 --> 00:12:39,925 has been worshipped as a god. 159 00:12:39,959 --> 00:12:46,065 but those arms in their prayer-like pose are deceptive. 160 00:12:46,099 --> 00:12:49,002 Reports of snakes, small birds and mammals 161 00:12:49,035 --> 00:12:54,440 succumbing to its death grip are no myth. 162 00:12:59,145 --> 00:13:02,915 a smaller male mantis is a pushover in comparison. 163 00:13:06,486 --> 00:13:10,423 Their eyes are made of 10,000 separate specialized zones, 164 00:13:10,456 --> 00:13:13,926 giving it excellent stereoscopic vision... 165 00:13:13,960 --> 00:13:19,065 Able to see up to 50 feet away. 166 00:13:19,098 --> 00:13:21,667 grooming himself, this male doesn't realize 167 00:13:21,701 --> 00:13:25,438 the female in town is not looking for a mate. 168 00:13:25,471 --> 00:13:27,873 She's looking for lunch. 169 00:13:27,907 --> 00:13:29,776 Her spring-loaded prayer stance 170 00:13:29,809 --> 00:13:33,479 strikes in 30 thousandths of a second... 171 00:13:33,513 --> 00:13:35,615 Faster than the eye can see. 172 00:13:40,553 --> 00:13:43,623 The powerful spiked forearms have a crushing grip 173 00:13:43,656 --> 00:13:48,027 that is nearly impossible to escape. 174 00:13:48,061 --> 00:13:51,598 A mantis eats its prey alive... 175 00:13:51,631 --> 00:13:53,233 And for this cannibal, 176 00:13:53,266 --> 00:13:57,871 decapitation is the preferred way to serve up today's meal. 177 00:14:03,509 --> 00:14:07,413 With names like trioceros, bradypodion and archaius, 178 00:14:07,447 --> 00:14:10,717 you'd think we had stepped back into the Jurassic age. 179 00:14:12,385 --> 00:14:14,187 But these cold-blooded creatures 180 00:14:14,220 --> 00:14:19,425 are one of the most successful hunters in the jungle today. 181 00:14:19,459 --> 00:14:22,896 you've got to be quick when your food moves this fast. 182 00:14:25,431 --> 00:14:28,434 well-developed eyes that pivot independently 183 00:14:28,468 --> 00:14:31,938 allow it to see almost 360 degrees. 184 00:14:33,439 --> 00:14:36,442 There is nowhere to hide. 185 00:14:36,476 --> 00:14:40,313 These strange reptiles are chameleons. 186 00:14:40,346 --> 00:14:42,548 Slow, deliberate steps 187 00:14:42,582 --> 00:14:45,218 allow them to get close to their target. 188 00:14:49,922 --> 00:14:54,193 Chameleons are not designed for the chase. 189 00:14:54,227 --> 00:14:55,895 Their secret weapon? 190 00:14:55,928 --> 00:15:01,267 a ballistic tongue that accelerates at over 40 g's... 191 00:15:01,300 --> 00:15:03,636 That's more than 10 times the g-force 192 00:15:03,669 --> 00:15:05,971 of a NASA space shuttle on takeoff. 193 00:15:17,183 --> 00:15:18,618 There is nothing in the jungle 194 00:15:18,651 --> 00:15:21,387 that can outpace the chameleon's tongue. 195 00:15:23,289 --> 00:15:26,359 It is deadly accurate. 196 00:15:26,392 --> 00:15:28,361 Once you're within striking distance, 197 00:15:28,394 --> 00:15:31,030 chances of escape are slim. 198 00:15:36,269 --> 00:15:41,908 in this Indonesian jungle lives the king of camouflage. 199 00:15:41,941 --> 00:15:45,211 this tiny egg, no bigger than a grain of rice, 200 00:15:45,244 --> 00:15:48,881 will give rise to one of the largest insects on the planet, 201 00:15:48,915 --> 00:15:51,785 the atlas moth. 202 00:15:51,818 --> 00:15:55,955 for it to reach monstrous proportions, he needs to eat. 203 00:15:55,988 --> 00:16:01,126 and for the first six weeks of his life, that's all he does. 204 00:16:01,160 --> 00:16:04,697 It's not long before he's too big for his own skin. 205 00:16:04,730 --> 00:16:08,667 his gooey insides bulge, and his old bodysuit pops open 206 00:16:08,701 --> 00:16:12,038 to allow the caterpillar to mature. 207 00:16:12,071 --> 00:16:18,244 He will shed his skin four times as he grows fatter and fatter. 208 00:16:18,277 --> 00:16:20,579 This grub continues to binge-eat 209 00:16:20,613 --> 00:16:25,151 until he's the size of a hot dog. 210 00:16:25,184 --> 00:16:30,322 and then, it's time for a costume change. 211 00:16:30,356 --> 00:16:32,000 The caterpillar starts to construct 212 00:16:32,024 --> 00:16:35,828 his own silk changing room. 213 00:16:35,862 --> 00:16:41,468 one month later, it's time for the big reveal. 214 00:16:41,501 --> 00:16:43,970 with a wingspan of more than 12 inches, 215 00:16:44,003 --> 00:16:45,972 it truly is a mammoth moth. 216 00:16:54,247 --> 00:16:58,752 This once fat ugly duckling is now a mosaic of color, 217 00:16:58,784 --> 00:17:02,554 and it's not just for show. 218 00:17:02,588 --> 00:17:08,561 the tips of the moth's wings resemble the face of a cobra. 219 00:17:08,594 --> 00:17:10,529 When threatened by predators, 220 00:17:10,563 --> 00:17:13,566 this transformer will imitate this deadly snake 221 00:17:13,599 --> 00:17:16,402 by moving its wings back and forth. 222 00:17:18,838 --> 00:17:22,041 despite this elaborate and miraculous makeover, 223 00:17:22,074 --> 00:17:26,011 the adult atlas moth has little over a week to live. 224 00:17:28,648 --> 00:17:31,518 with no mouth, he is unable to feed, 225 00:17:31,551 --> 00:17:37,157 so his only goal is to find a mate and continue his legacy. 226 00:17:42,061 --> 00:17:45,631 next on our countdown is the stuff of nightmares. 227 00:17:48,534 --> 00:17:50,102 When darkness falls, 228 00:17:50,136 --> 00:17:54,207 no creature in these stables is safe. 229 00:17:54,240 --> 00:17:57,009 It's the vampire bat, 230 00:17:57,043 --> 00:18:00,246 the only bat in the world that feeds on blood. 231 00:18:05,217 --> 00:18:07,319 It's a master of echolocation 232 00:18:07,353 --> 00:18:09,722 and uses bouncing ultrasonic sound waves 233 00:18:09,755 --> 00:18:12,858 to locate its victim. 234 00:18:12,892 --> 00:18:16,429 It can tell where the warm blood runs close to the skin, 235 00:18:16,462 --> 00:18:19,165 thanks to heat sensors near its nose. 236 00:18:22,668 --> 00:18:25,404 Dinner... Is served. 237 00:18:25,438 --> 00:18:27,874 With the sharpest teeth in the animal kingdom, 238 00:18:27,907 --> 00:18:30,410 the vampire bat gently cuts through the skin 239 00:18:30,443 --> 00:18:32,745 and sucks up the blood. 240 00:18:36,115 --> 00:18:39,218 And thanks to a local anesthetic in the bat's spit, 241 00:18:39,251 --> 00:18:42,721 the victim doesn't feel a thing. 242 00:18:45,224 --> 00:18:47,526 It may be the size of your thumb, 243 00:18:47,560 --> 00:18:52,231 but the vampire has a life-sized appetite. 244 00:18:52,264 --> 00:18:55,768 in just one year, a colony of 100 vampires 245 00:18:55,801 --> 00:19:00,472 can drain the blood of 25 horses. 246 00:19:00,506 --> 00:19:02,608 Without its blood fix every night, 247 00:19:02,642 --> 00:19:04,811 the bat would starve to death. 248 00:19:07,113 --> 00:19:08,781 But through super hearing, 249 00:19:08,814 --> 00:19:11,950 the vampire will recognize this horse's breathing, 250 00:19:11,984 --> 00:19:15,955 and tomorrow night he will be back for more. 251 00:19:23,429 --> 00:19:28,935 This cold-blooded eating machine has a taste for his own kind. 252 00:19:28,968 --> 00:19:30,503 And when he's on the hunt, 253 00:19:30,536 --> 00:19:33,906 he goes straight for the lion's share... 254 00:19:33,939 --> 00:19:37,976 whether it fits into his mouth or not. 255 00:19:49,321 --> 00:19:52,357 Capable of injecting enough venom to kill an elephant, 256 00:19:52,391 --> 00:19:56,328 a king cobra's bite is one of the deadliest on earth. 257 00:19:58,397 --> 00:20:02,968 Once the venom has taken effect, it's time to eat this rat snake. 258 00:20:08,774 --> 00:20:12,478 First, he's got to locate and line up the head of his meal. 259 00:20:15,347 --> 00:20:18,150 having no limbs, he uses his mouth... 260 00:20:18,184 --> 00:20:20,853 Slowly slithering toward the head. 261 00:20:23,856 --> 00:20:26,859 once lined up he starts to swallow. 262 00:20:32,832 --> 00:20:35,368 He's got a deceptively small mouth, 263 00:20:35,401 --> 00:20:38,571 but elastic tendons allow him to stretch it incredibly wide 264 00:20:38,604 --> 00:20:40,773 to accommodate big meals. 265 00:20:45,745 --> 00:20:51,050 It's not about what fits in his mouth, 266 00:20:51,083 --> 00:20:53,886 but what fits through his mouth. 267 00:20:53,919 --> 00:20:58,557 Snakes can't make themselves longer, 268 00:20:58,591 --> 00:21:00,626 but they can stretch wider, 269 00:21:00,659 --> 00:21:05,063 stuffing in their prey and slowly expanding outwards. 270 00:21:06,899 --> 00:21:09,835 Eyes too big for its stomach? 271 00:21:09,869 --> 00:21:13,139 not likely to happen with this gruesome killer. 272 00:21:16,709 --> 00:21:19,478 And with that... Dinner's done! 273 00:21:22,314 --> 00:21:24,082 And now... Another collection 274 00:21:24,116 --> 00:21:27,886 of hair-raising and heart-pounding images. 275 00:21:27,920 --> 00:21:30,389 from hippo wars to baboon battles, 276 00:21:30,422 --> 00:21:34,359 we count down the most ferocious fights captured on camera. 277 00:21:35,995 --> 00:21:38,364 With the onset of new seasons, 278 00:21:38,397 --> 00:21:42,434 males compete for territory and mating rights. 279 00:21:42,468 --> 00:21:44,370 It's a brutal fight. 280 00:21:44,403 --> 00:21:47,606 Some wrestle for dominance... 281 00:21:47,640 --> 00:21:51,077 Others bite, clash... Or kill. 282 00:21:51,110 --> 00:21:53,713 Hold on to your seats for another round... 283 00:21:53,746 --> 00:21:57,717 As we count down the fiercest fights in the animal kingdom. 284 00:22:02,721 --> 00:22:04,923 This deadly mega-mouth makes his entrance 285 00:22:04,957 --> 00:22:08,661 at number 3 on our countdown of gang wars. 286 00:22:09,995 --> 00:22:12,030 With tusks more than a foot long 287 00:22:12,064 --> 00:22:14,199 and the strongest bite on the planet, 288 00:22:14,233 --> 00:22:18,070 it's one of the most dangerous animals in Africa. 289 00:22:18,103 --> 00:22:20,939 But this buxom beast is a vegetarian 290 00:22:20,973 --> 00:22:25,511 and feeds on nearly 90 pounds of grass a day. 291 00:22:25,544 --> 00:22:28,047 So why the mouthful of menacing teeth? 292 00:22:30,049 --> 00:22:33,519 Their sole purpose is battle. 293 00:22:33,552 --> 00:22:36,555 When it comes to choosing territories and females, 294 00:22:36,589 --> 00:22:40,993 male hippos will use their teeth to fight to the death. 295 00:22:41,026 --> 00:22:43,428 it's the height of zambia's dry season, 296 00:22:43,462 --> 00:22:46,065 and this male's territory has been reduced 297 00:22:46,098 --> 00:22:48,467 to little more than a shallow stream. 298 00:22:50,936 --> 00:22:53,605 he's had to go in search of deeper water... 299 00:22:53,639 --> 00:22:55,841 In enemy territory. 300 00:22:57,643 --> 00:23:02,681 This prime section of the river is owned by a dominant male. 301 00:23:02,715 --> 00:23:05,351 The intruder can either put his pride aside 302 00:23:05,384 --> 00:23:08,320 and submit to the resident male 303 00:23:08,354 --> 00:23:11,057 or fight him for it. 304 00:23:12,291 --> 00:23:15,194 He chooses war. 305 00:23:15,227 --> 00:23:19,431 The massive yawn confirms the intruder's challenge. 306 00:23:19,465 --> 00:23:22,535 he sprays his feces and testosterone through the air 307 00:23:22,568 --> 00:23:24,570 to mark his territory. 308 00:23:27,573 --> 00:23:29,742 The intruder stands his ground. 309 00:23:32,811 --> 00:23:34,913 And the battle is on. 310 00:23:53,132 --> 00:23:55,468 A 2-inch-thick hide provides some protection 311 00:23:55,501 --> 00:23:58,971 against each other's ivory fangs, 312 00:23:59,004 --> 00:24:02,608 but the insides of their mouths are soft and gummy. 313 00:24:04,977 --> 00:24:07,413 This is their target. 314 00:24:07,446 --> 00:24:11,150 Their lower canines impale. 315 00:24:11,183 --> 00:24:13,452 The intruder uses his monster mouth 316 00:24:13,485 --> 00:24:19,057 to lift the dominant male out of the water like a bulldozer. 317 00:24:19,091 --> 00:24:22,094 But this two-ton bull's no pushover. 318 00:24:39,311 --> 00:24:42,514 The intruder admits defeat. 319 00:24:42,548 --> 00:24:45,584 He's lucky to escape with his life... 320 00:24:45,617 --> 00:24:47,352 This time around. 321 00:24:52,091 --> 00:24:53,859 Coming in at number 2... 322 00:24:53,892 --> 00:25:00,165 These feisty African geladas are no strangers to deadly duels. 323 00:25:00,199 --> 00:25:02,201 They share the same social structure 324 00:25:02,234 --> 00:25:04,703 as their baboon cousins. 325 00:25:04,737 --> 00:25:07,473 Each herd has one dominant male, 326 00:25:07,506 --> 00:25:11,210 and it's the job of this ruling gelada, the baboon king, 327 00:25:11,243 --> 00:25:15,547 to keep his family of females and young protected. 328 00:25:15,581 --> 00:25:19,919 So far it's twelve babies and counting. 329 00:25:19,952 --> 00:25:21,554 But the larger the family, 330 00:25:21,587 --> 00:25:23,622 the harder it is for this ruling male 331 00:25:23,655 --> 00:25:27,459 to keep up with his fatherly obligations. 332 00:25:27,493 --> 00:25:30,763 And now, he faces a serious problem. 333 00:25:30,796 --> 00:25:32,665 There's a new kid on the block. 334 00:25:32,698 --> 00:25:36,902 He's the king's younger brother, and he's vying for the throne. 335 00:25:40,105 --> 00:25:45,711 the baboon king keeps guard of the herd on their daily commute. 336 00:25:45,744 --> 00:25:49,081 But today is no ordinary day. 337 00:25:49,114 --> 00:25:51,316 It's an ambush. 338 00:25:51,350 --> 00:25:55,554 And this band of bachelors has been waiting for him. 339 00:25:55,587 --> 00:25:57,789 It's four against one. 340 00:26:04,196 --> 00:26:06,665 Retreat is the only option. 341 00:26:09,568 --> 00:26:12,271 They know that if they can help bring down the king, 342 00:26:12,304 --> 00:26:15,274 they'll move up a notch in the mating chain. 343 00:26:20,012 --> 00:26:23,482 he catches his breath in the top of a tree... 344 00:26:23,515 --> 00:26:25,584 Then makes a break for it. 345 00:26:28,387 --> 00:26:32,958 He runs for open space and right into a trap 346 00:26:32,991 --> 00:26:34,960 where his brother has been waiting. 347 00:26:40,199 --> 00:26:44,637 This battle will be mano a mano. 348 00:26:47,306 --> 00:26:51,877 the fury of the fight shows just how much is at stake here... 349 00:26:51,910 --> 00:26:56,148 Possibly the end of one reign and the beginning of another. 350 00:27:10,395 --> 00:27:14,933 The king delivers a savage bite, straight to his brother's face. 351 00:27:17,803 --> 00:27:19,938 The fight is over. 352 00:27:21,807 --> 00:27:24,276 The challenger is badly injured. 353 00:27:24,309 --> 00:27:28,213 His older brother has left him with the ultimate scar. 354 00:27:28,247 --> 00:27:31,484 He's lost a canine, the mark of manhood. 355 00:27:35,888 --> 00:27:40,526 Against all odds, the king has clawed his way back to the top 356 00:27:40,559 --> 00:27:43,028 and has secured this mountain throne 357 00:27:43,061 --> 00:27:45,797 at least for one more year. 358 00:27:52,538 --> 00:27:54,707 Enter into japan's wild woods 359 00:27:54,740 --> 00:27:59,044 and you'll hear the honeybees abuzz. 360 00:27:59,077 --> 00:28:02,280 Beneath the cool, mossy exterior of their fortress, 361 00:28:02,314 --> 00:28:04,950 these forest dwellers are working around the clock 362 00:28:04,983 --> 00:28:07,619 to nurture their hive and protect their young. 363 00:28:14,193 --> 00:28:15,594 During the summer months, 364 00:28:15,627 --> 00:28:19,798 worker bees tirelessly produce honey for the hive. 365 00:28:19,831 --> 00:28:22,267 They spend their days collecting nectar; 366 00:28:22,301 --> 00:28:25,838 then regurgitate the honey into cells in the honeycomb. 367 00:28:29,074 --> 00:28:32,210 Their teamwork has produced a thriving colony... 368 00:28:32,244 --> 00:28:35,881 and it's a treasure chest just waiting to be plundered. 369 00:28:37,849 --> 00:28:40,852 These tiny honeybees are easy prey 370 00:28:40,886 --> 00:28:45,023 for the largest hornet in the world. 371 00:28:45,057 --> 00:28:48,827 Two inches long and 20 times heavier than the honeybee, 372 00:28:48,860 --> 00:28:50,662 the giant bamboo hornet 373 00:28:50,696 --> 00:28:52,932 can wipe out tens of thousands of bees 374 00:28:52,965 --> 00:28:55,267 in a matter of hours. 375 00:28:55,300 --> 00:28:57,335 They've hit the jackpot! 376 00:29:01,573 --> 00:29:03,208 With an enemy in their midst, 377 00:29:03,242 --> 00:29:05,911 the honeybees hatch a battle plan. 378 00:29:07,312 --> 00:29:10,549 This isn't their first rodeo! 379 00:29:10,582 --> 00:29:14,119 Working in groups, the bees overwhelm the giant hornet, 380 00:29:14,152 --> 00:29:18,223 biting and stinging her repeatedly. 381 00:29:18,257 --> 00:29:20,092 They disperse a pheromone, 382 00:29:20,125 --> 00:29:21,994 which alerts the rest of the hive 383 00:29:22,027 --> 00:29:23,996 and calls in fresh recruits. 384 00:29:27,299 --> 00:29:29,501 Clusters of bees mob the hornet 385 00:29:29,534 --> 00:29:32,170 and block the breathing holes on her abdomen. 386 00:29:36,675 --> 00:29:38,577 Their aim is to heat up her temperature 387 00:29:38,610 --> 00:29:40,745 beyond her thermal limit. 388 00:29:44,783 --> 00:29:48,787 Inside the bee ball it's 116 degrees... 389 00:29:48,820 --> 00:29:52,090 And the smothered hornet is quickly overheating. 390 00:29:56,495 --> 00:29:59,999 The giant finally gives up her brave fight... 391 00:30:00,032 --> 00:30:04,737 Defeated by a gang of tiny bees one fifth her size. 392 00:30:07,372 --> 00:30:10,275 Get ready for the romantic and riveting... 393 00:30:10,309 --> 00:30:14,847 As we continue our countdown incredible animal moments. 394 00:30:16,648 --> 00:30:20,252 At certain times of the year, jungles, deserts and prairies 395 00:30:20,285 --> 00:30:24,956 sing with the sounds of romance and courtship. 396 00:30:24,990 --> 00:30:29,828 For some, it can be a friendly, romantic and charming affair. 397 00:30:29,861 --> 00:30:32,964 For others... Not so much. 398 00:30:35,100 --> 00:30:40,105 So get ready for the raunchy, risqué, and downright dirty... 399 00:30:40,138 --> 00:30:43,274 And see what really happens behind the curtain, 400 00:30:43,308 --> 00:30:47,479 next on our countdown incredible animal moments. 401 00:30:53,251 --> 00:30:54,753 In the jungles of Panama, 402 00:30:54,786 --> 00:30:57,055 it's the onset of the rainy season... 403 00:30:57,089 --> 00:31:00,059 and the forest echoes with the music of frogs. 404 00:31:07,065 --> 00:31:10,302 One of these small amphibians has hopped on to our countdown 405 00:31:10,335 --> 00:31:12,370 to occupy third place. 406 00:31:15,507 --> 00:31:18,143 a male glass frog calls for a mate... 407 00:31:20,746 --> 00:31:24,216 And a female responds. 408 00:31:24,249 --> 00:31:27,719 Spurred by the rain, they've both come down to the stream 409 00:31:27,753 --> 00:31:33,292 to engage in an intimate and ancient ritual. 410 00:31:33,325 --> 00:31:36,728 these amphibians spend the dry season in the canopy, 411 00:31:36,762 --> 00:31:40,399 but once the rains come, it's time to mate. 412 00:31:45,570 --> 00:31:47,072 Glass frogs get their name 413 00:31:47,105 --> 00:31:50,308 from their unique style of camouflage. 414 00:31:50,342 --> 00:31:54,146 They don't change their colors like some animals. 415 00:31:54,179 --> 00:31:58,984 the glass frog's belly is completely translucent. 416 00:31:59,017 --> 00:32:01,620 In the deep green wetness of the rainforest, 417 00:32:01,653 --> 00:32:05,157 it's a perfect disguise. 418 00:32:05,190 --> 00:32:07,626 before mating, the female glass frog 419 00:32:07,659 --> 00:32:11,229 hops around on a leaf, collecting water, 420 00:32:11,263 --> 00:32:15,768 causing her to swell up and hydrate the eggs inside her. 421 00:32:15,801 --> 00:32:18,070 when the female releases the eggs, 422 00:32:18,103 --> 00:32:22,608 the male catches them with his hind legs and fertilizes them. 423 00:32:22,641 --> 00:32:25,477 as the eggs develop over the next two weeks, 424 00:32:25,510 --> 00:32:30,215 both the male and female play important parental roles. 425 00:32:30,248 --> 00:32:33,118 One frog takes a turn hydrating the eggs, 426 00:32:33,151 --> 00:32:37,188 while the other helps stand guard. 427 00:32:37,222 --> 00:32:39,291 This shared parental daycare 428 00:32:39,324 --> 00:32:43,995 will go a long way to ensure the survival of their offspring. 429 00:32:47,866 --> 00:32:49,434 Coming in at number 2... 430 00:32:49,468 --> 00:32:51,937 Although these contenders are cold blooded, 431 00:32:51,970 --> 00:32:54,182 they know how to keep things hot and steamy 432 00:32:54,206 --> 00:32:56,041 on the jungle floor. 433 00:33:00,712 --> 00:33:04,549 vipers mate in a ritual of gently rubbing bodies. 434 00:33:08,753 --> 00:33:11,756 Their bodies caress and tongues flicker 435 00:33:11,790 --> 00:33:14,359 as the male tastes the female's pheromones, 436 00:33:14,392 --> 00:33:17,629 testing if she's ready to mate. 437 00:33:17,662 --> 00:33:19,497 When the female is aroused, 438 00:33:19,531 --> 00:33:22,834 she'll lift the base of her tail, and they'll mate, 439 00:33:22,868 --> 00:33:24,837 like these puff adders are doing. 440 00:33:29,040 --> 00:33:33,244 The male tends to do most of the work... 441 00:33:33,278 --> 00:33:36,348 perhaps the females pace themselves during mating 442 00:33:36,381 --> 00:33:37,849 because just one session 443 00:33:37,883 --> 00:33:41,387 can sometimes carry on for up to three hours. 444 00:33:44,956 --> 00:33:49,260 females hold all the cards when it comes to reproduction. 445 00:33:49,294 --> 00:33:52,097 they can store sperm from one mating session 446 00:33:52,130 --> 00:33:57,636 for up to five years before it starts to deteriorate. 447 00:33:57,669 --> 00:34:01,273 unlike most snakes, female puff adders give birth 448 00:34:01,306 --> 00:34:03,441 to live snakelings. 449 00:34:11,016 --> 00:34:12,718 this ensures that their offspring 450 00:34:12,751 --> 00:34:16,989 get the best possible chance at life. 451 00:34:17,022 --> 00:34:20,959 within two weeks of birth, equipped with fangs and venom, 452 00:34:20,992 --> 00:34:22,527 they're fully independent 453 00:34:22,561 --> 00:34:26,432 and perfectly capable of surviving on their own. 454 00:34:30,669 --> 00:34:33,438 Number 1 on our countdown of romantic moments 455 00:34:33,471 --> 00:34:37,608 goes to the gifted lover from down under. 456 00:34:37,642 --> 00:34:39,878 The little red flying fox of Australia 457 00:34:39,911 --> 00:34:44,115 is a real trapeze artist. 458 00:34:44,149 --> 00:34:46,184 This acrobat uses his talents 459 00:34:46,217 --> 00:34:49,721 even in the most challenging positions. 460 00:34:49,754 --> 00:34:52,857 Long-clawed thumbs make ideal clambering hooks 461 00:34:52,891 --> 00:34:55,260 for walking the tightrope. 462 00:34:55,293 --> 00:34:57,128 And a good grip is important 463 00:34:57,162 --> 00:35:00,298 when you're as hyperactive as the acrobat. 464 00:35:03,368 --> 00:35:06,605 the little red spends a third of its day grooming 465 00:35:06,638 --> 00:35:09,508 and another large chunk of it sleeping. 466 00:35:13,945 --> 00:35:17,048 Their curved claws act as bat coat hangers 467 00:35:17,082 --> 00:35:19,818 and allow them to hang around, upside down, 468 00:35:19,851 --> 00:35:22,420 without ever falling... 469 00:35:22,454 --> 00:35:25,324 Even when they're taking a nap. 470 00:35:25,357 --> 00:35:28,627 In fact, their feet can latch on so hard 471 00:35:28,660 --> 00:35:33,031 that even dead bats remain hanging in place. 472 00:35:33,064 --> 00:35:35,066 When you're always upside down, 473 00:35:35,100 --> 00:35:37,736 you need a trick move when nature calls. 474 00:35:45,810 --> 00:35:48,846 But this is not the only move that counts here. 475 00:35:51,249 --> 00:35:55,653 The acrobats compete for females in upside-down boxing matches. 476 00:35:58,523 --> 00:36:01,393 it's inverted mixed martial arts. 477 00:36:04,963 --> 00:36:08,567 They claw, box and bite. 478 00:36:13,638 --> 00:36:15,707 The victorious gymnast will mate 479 00:36:15,740 --> 00:36:20,845 with any female that will have him. 480 00:36:20,879 --> 00:36:23,382 And it's a tricky affair, 481 00:36:23,415 --> 00:36:25,951 even if you're hanging like a bat. 482 00:36:30,021 --> 00:36:33,958 after a steamy romance comes the job of parenting, 483 00:36:33,992 --> 00:36:36,328 and a few animals will risk everything 484 00:36:36,361 --> 00:36:38,496 to protect their young. 485 00:36:38,530 --> 00:36:42,267 Next, more incredible images as we count down 486 00:36:42,300 --> 00:36:45,904 the greatest moments of extreme parenting. 487 00:36:47,672 --> 00:36:51,409 For many animals, parenting can be a full-time job. 488 00:36:51,443 --> 00:36:53,712 Some females go at it solo, 489 00:36:53,745 --> 00:36:57,182 caring for their young and providing for the family. 490 00:36:57,215 --> 00:36:59,084 Others get help from dad 491 00:36:59,117 --> 00:37:02,320 or other females, if they're lucky. 492 00:37:02,353 --> 00:37:05,890 up next, we count down the most remarkable moments 493 00:37:05,924 --> 00:37:08,093 of animal parenting. 494 00:37:12,764 --> 00:37:15,367 it's summer on the Mississippi river, 495 00:37:15,400 --> 00:37:16,935 and this pair of feathered lovers 496 00:37:16,968 --> 00:37:20,138 glides in at the top of our countdown. 497 00:37:20,171 --> 00:37:22,440 Wood ducks that partnered up in January 498 00:37:22,474 --> 00:37:26,011 now prepare to start a family. 499 00:37:26,044 --> 00:37:27,712 A hole high above the water 500 00:37:27,746 --> 00:37:30,916 will provide relative safety from predators... 501 00:37:30,949 --> 00:37:33,051 and easy access to the Mississippi 502 00:37:33,084 --> 00:37:36,955 when the chicks are ready to take to the water. 503 00:37:36,988 --> 00:37:40,525 by late June... 30 days after they were laid... 504 00:37:40,558 --> 00:37:44,729 A dozen surviving wood ducks are ready to hatch. 505 00:37:44,763 --> 00:37:49,935 All the chicks are born alert and with a full coat of down. 506 00:37:49,968 --> 00:37:52,003 They can't fly yet, 507 00:37:52,036 --> 00:37:54,672 but they can't stay cramped up here either. 508 00:37:56,775 --> 00:37:58,610 After only one day, 509 00:37:58,643 --> 00:38:03,948 mom calls for them to boldly go where they've never gone before. 510 00:38:03,982 --> 00:38:07,986 It's a 30-foot leap of faith. 511 00:38:08,019 --> 00:38:11,623 the first brave soul prepares for liftoff. 512 00:38:32,110 --> 00:38:35,814 one down... and its brothers and sisters wait in the wings. 513 00:39:05,810 --> 00:39:11,449 typically, all the chicks will jump just minutes apart. 514 00:39:16,788 --> 00:39:19,958 but every now and then, there's a failure to launch. 515 00:39:42,413 --> 00:39:44,582 After the harrowing departure, 516 00:39:44,616 --> 00:39:48,920 they've landed in a brave new world. 517 00:39:48,953 --> 00:39:52,657 Only about half the ducklings will make it to adulthood. 518 00:39:52,690 --> 00:39:57,195 In the meantime, it's up to mom to teach them all she can. 519 00:40:02,400 --> 00:40:05,570 South of the U.S. border, off the coast of Mexico, 520 00:40:05,603 --> 00:40:07,905 another mother goes to extreme lengths 521 00:40:07,939 --> 00:40:11,543 to provide protection to her newborn calf. 522 00:40:11,576 --> 00:40:14,446 this pacific humpback takes the number 3 slot 523 00:40:14,479 --> 00:40:19,017 on our countdown of extreme parenting. 524 00:40:19,050 --> 00:40:22,654 every year these giants make the 16,000-mile journey 525 00:40:22,687 --> 00:40:24,389 from the cold artic seas 526 00:40:24,422 --> 00:40:28,960 to safer havens in the tropical pacific. 527 00:40:28,993 --> 00:40:31,062 these islands off the Baja peninsula 528 00:40:31,095 --> 00:40:32,730 provide an important sanctuary 529 00:40:32,764 --> 00:40:39,604 for whales who come to give birth in these warm waters. 530 00:40:39,637 --> 00:40:42,773 this mother has chosen this extraordinary location 531 00:40:42,807 --> 00:40:46,411 to introduce her newborn calf to the world, 532 00:40:46,444 --> 00:40:48,413 the start of a powerful bond. 533 00:40:52,583 --> 00:40:56,153 for hours at a time, she remains almost motionless 534 00:40:56,187 --> 00:40:59,590 as her daughter suckles some of the richest milk of any mammal, 535 00:40:59,624 --> 00:41:02,327 up to 150 gallons a day. 536 00:41:05,596 --> 00:41:08,132 Even though her mother weighs in the tons, 537 00:41:08,166 --> 00:41:10,702 she demonstrates a tenderness with her calf 538 00:41:10,735 --> 00:41:13,271 that belies her enormous power. 539 00:41:15,707 --> 00:41:20,145 This youngster is growing at around 55 pounds a day, 540 00:41:20,178 --> 00:41:24,482 and one of her first important lessons is controlling buoyancy. 541 00:41:28,219 --> 00:41:31,322 Mother whale makes sitting still look easy. 542 00:41:31,356 --> 00:41:35,260 But her one-ton baby can't seem to get the hang of it. 543 00:41:37,962 --> 00:41:40,932 eventually she figures out that she can use her mother 544 00:41:40,965 --> 00:41:43,034 as a kind of giant anchor, 545 00:41:43,067 --> 00:41:46,971 nestling beneath her until she needs to surface for air. 546 00:41:55,279 --> 00:41:58,048 for now, being a baby humpback whale 547 00:41:58,082 --> 00:42:03,721 in the deep blue waters of Baja seems idyllic. 548 00:42:03,755 --> 00:42:05,290 The lessons she's learning here 549 00:42:05,323 --> 00:42:08,026 could mean the difference between life and death 550 00:42:08,059 --> 00:42:10,995 when she makes her first long and dangerous journey 551 00:42:11,029 --> 00:42:13,598 all the way to the rich feeding grounds 552 00:42:13,631 --> 00:42:15,867 of the frozen arctic circle. 553 00:42:24,375 --> 00:42:27,345 once the grasses of the serengeti start growing, 554 00:42:27,378 --> 00:42:33,017 an extraordinary tale of animal daycare unfolds. 555 00:42:33,051 --> 00:42:35,487 it's the onset of the calving season, 556 00:42:35,520 --> 00:42:37,255 when each heavily pregnant cow 557 00:42:37,288 --> 00:42:39,690 will instinctively drop its calf, 558 00:42:39,724 --> 00:42:44,195 as many as 8,000 per day. 559 00:42:44,228 --> 00:42:46,297 And it's the following two to three weeks 560 00:42:46,330 --> 00:42:49,400 that the predators have been waiting for. 561 00:42:52,670 --> 00:42:54,539 This lioness is hiding at the center 562 00:42:54,572 --> 00:42:57,341 of literally thousands of newborn calves. 563 00:43:02,313 --> 00:43:05,316 A mother is forced to leave her minutes-old offspring. 564 00:43:13,224 --> 00:43:15,359 She makes a brave and final attempt 565 00:43:15,393 --> 00:43:19,097 to scare off the big cat. 566 00:43:32,810 --> 00:43:36,013 But her calf is now at another's mercy. 567 00:43:55,399 --> 00:43:59,336 why the lioness hesitates to make the kill is unknown. 568 00:44:04,475 --> 00:44:07,445 astonishingly, the calf is imprinting, 569 00:44:07,478 --> 00:44:09,981 compelled to treat a nearby warm body 570 00:44:10,014 --> 00:44:13,784 as its provider and protector, 571 00:44:13,818 --> 00:44:17,855 a very rare and usually fatal mistake. 572 00:44:17,889 --> 00:44:20,024 But for some mysterious reason, 573 00:44:20,057 --> 00:44:22,626 the lioness tolerates the behavior. 574 00:44:36,274 --> 00:44:39,711 attention diverted, the calf is left alone. 575 00:44:43,414 --> 00:44:47,285 Somewhere in there is a mother bereft of her calf. 576 00:44:55,626 --> 00:44:58,295 It's believed that mothers recognize their own calves 577 00:44:58,329 --> 00:44:59,730 by scent. 578 00:44:59,764 --> 00:45:03,468 But successful reunions like this are rare. 579 00:45:13,477 --> 00:45:15,679 This zebra has just given birth, 580 00:45:15,713 --> 00:45:20,685 and she's the crown winner in our countdown. 581 00:45:20,718 --> 00:45:24,488 As a new mom, she has one simple mission: 582 00:45:24,522 --> 00:45:28,526 To keep her seven-week-old foal alive on his first migration 583 00:45:28,559 --> 00:45:31,529 across the brutal plains and treacherous rivers 584 00:45:31,562 --> 00:45:34,365 of the masai Mara. 585 00:45:34,398 --> 00:45:36,533 Every year, the search for food and water 586 00:45:36,567 --> 00:45:39,203 drives 1.5 million wildebeest 587 00:45:39,237 --> 00:45:41,473 and hundreds of thousands of zebras 588 00:45:41,505 --> 00:45:46,210 on an 1,800-mile journey across this east African Savannah. 589 00:45:48,246 --> 00:45:51,182 By the time they complete this great migration, 590 00:45:51,215 --> 00:45:55,920 almost a quarter of the animals will perish. 591 00:45:55,953 --> 00:46:00,791 For many, the violent Mara river is the ultimate choke point 592 00:46:00,825 --> 00:46:05,563 and the setting for nature's deadliest ambush. 593 00:46:05,596 --> 00:46:10,134 Lurking below are the biggest crocodiles in Africa. 594 00:46:10,167 --> 00:46:15,739 For months they've survived on little but scraps... 595 00:46:15,773 --> 00:46:17,074 And they are hungry. 596 00:46:23,147 --> 00:46:24,982 Mom and foal take the plunge 597 00:46:25,016 --> 00:46:28,686 and are quickly swept downstream. 598 00:46:30,154 --> 00:46:31,922 As mom fights the rapids, 599 00:46:31,956 --> 00:46:35,827 there is no way the little foal can keep up. 600 00:46:35,860 --> 00:46:37,562 The pair is ripped apart, 601 00:46:37,595 --> 00:46:42,600 and the foal disappears into the chaos. 602 00:46:42,633 --> 00:46:45,102 as more zebras are washed downstream, 603 00:46:45,136 --> 00:46:47,205 the young foal follows. 604 00:46:51,842 --> 00:46:53,844 After crossing twice midstream, 605 00:46:53,878 --> 00:46:57,782 he finally makes it to the riverbank. 606 00:46:57,815 --> 00:47:00,885 this time... There's no turning back. 607 00:47:04,855 --> 00:47:08,192 meanwhile his mother is fighting her own battle. 608 00:47:08,225 --> 00:47:09,693 She gathers her strength 609 00:47:09,727 --> 00:47:14,632 and readies herself for a final push. 610 00:47:14,665 --> 00:47:16,867 It's do or die. 611 00:47:24,408 --> 00:47:27,912 her young foal is not giving up either, 612 00:47:27,945 --> 00:47:30,848 but he's clearly exhausted. 613 00:47:33,484 --> 00:47:35,119 After hours of searching, 614 00:47:35,152 --> 00:47:38,355 mom still has not found her foal. 615 00:47:38,389 --> 00:47:40,625 Amazingly, she decides to plunge 616 00:47:40,658 --> 00:47:43,461 back into the crocodile-infested Mara... 617 00:47:43,494 --> 00:47:46,364 perhaps thinking he's on the other side. 618 00:47:48,999 --> 00:47:52,102 luckily the crocs are too far downstream... 619 00:47:52,136 --> 00:47:55,773 And mom makes it to the shallows. 620 00:47:55,806 --> 00:48:00,444 But the young foal is now on the opposite bank. 621 00:48:00,478 --> 00:48:03,982 it's been more than a day since he's seen his mother. 622 00:48:04,014 --> 00:48:06,316 without her milk, he won't last long. 623 00:48:11,055 --> 00:48:14,825 Miraculously mom has survived a third trip across the river 624 00:48:14,859 --> 00:48:18,329 and is finally back on the same bank as the foal. 625 00:48:23,734 --> 00:48:27,137 A bite from a crocodile jolts her into action. 626 00:48:28,906 --> 00:48:33,411 there's no way out over the pile of carcasses. 627 00:48:33,444 --> 00:48:35,246 The only option is to plunge 628 00:48:35,279 --> 00:48:38,682 back into the blood river one last time. 629 00:48:48,459 --> 00:48:50,261 Her only hope for survival 630 00:48:50,294 --> 00:48:54,565 is if the crocs have finally had their fill. 631 00:48:54,598 --> 00:48:58,402 And it seems this time they have. 632 00:49:05,242 --> 00:49:08,212 thanks to perseverance and the whims of nature, 633 00:49:08,245 --> 00:49:12,816 mother and foal are alive. 634 00:49:12,850 --> 00:49:16,554 Days of imprinting after birth have paid off. 635 00:49:16,587 --> 00:49:21,725 And after two days apart, mother and son reunite. 636 00:49:21,759 --> 00:49:23,294 For the next three months, 637 00:49:23,327 --> 00:49:27,731 they'll join the herds on the bountiful northern grasslands 638 00:49:27,765 --> 00:49:32,870 until the great migration leads them south once more. 639 00:49:32,903 --> 00:49:36,807 For this zebra and her foal, this is life... 640 00:49:36,841 --> 00:49:42,413 tenuous, challenging, and lived one day at a time. 51046

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