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These are the user uploaded subtitles that are being translated: 1 00:00:00,965 --> 00:00:02,862 ♪♪ 2 00:00:02,862 --> 00:00:05,000 Narrator: ANIMALS... 3 00:00:05,000 --> 00:00:07,344 DO THE MOST INCREDIBLE THINGS. 4 00:00:07,344 --> 00:00:09,068 [ GOAT BLEATS ] 5 00:00:09,068 --> 00:00:10,793 LIKE THIS... 6 00:00:10,793 --> 00:00:12,241 AND THAT. 7 00:00:12,241 --> 00:00:15,896 I BET YOU'RE WONDERING, "HOW DO THEY DO THAT?" 8 00:00:15,896 --> 00:00:20,896 WE'RE REVEALING ANIMALS' BIGGEST SECRETS, LIKE... 9 00:00:20,896 --> 00:00:24,172 ARE AFRICA'S GRUMPY AND AGGRESSIVE RHINOS 10 00:00:24,172 --> 00:00:27,620 LEADING A SECRET DOUBLE LIFE? 11 00:00:27,620 --> 00:00:31,620 WHY YOU CAN RUN BUT CAN'T HIDE FROM A RATTLESNAKE. 12 00:00:31,620 --> 00:00:35,137 AND WHY DOES THIS MOLE HAVE SUCH A WEIRD NOSE? 13 00:00:35,137 --> 00:00:39,172 THESE WONDERS AND MORE ON... 14 00:00:39,172 --> 00:00:42,137 --Captions by VITAC-- www.vitac.com 15 00:00:42,137 --> 00:00:45,137 CAPTIONS PAID FOR BY DISCOVERY COMMUNICATIONS 16 00:00:45,137 --> 00:00:48,482 IT'S POLITE TO CHEW BEFORE YOU SWALLOW, 17 00:00:48,482 --> 00:00:52,827 BUT COWS TAKE THIS IDEA TO A WHOLE NEW LEVEL. 18 00:00:52,827 --> 00:00:57,586 THEY GRIND THEIR MOLARS LEFT TO RIGHT 50 TIMES A MINUTE, 19 00:00:57,586 --> 00:01:01,206 40,000 TIMES A DAY... 20 00:01:01,206 --> 00:01:06,137 14 1/2 MILLION TIMES A YEAR. 21 00:01:06,137 --> 00:01:08,137 SO... 22 00:01:11,758 --> 00:01:14,586 ♪♪ 23 00:01:14,586 --> 00:01:19,758 MEET DAISY, AN INCREDIBLE THREE- QUARTER-TON BIOLOGICAL FACTORY. 24 00:01:19,758 --> 00:01:20,793 [ COW MOOS ] 25 00:01:20,793 --> 00:01:23,137 SHE'S ABLE TO TURN ENERGY-SPARSE, 26 00:01:23,137 --> 00:01:27,310 ALMOST NUTRITIONLESS GRASS INTO SEVEN GALLONS OF ENERGY 27 00:01:27,310 --> 00:01:30,551 AND PROTEIN-RICH MILK EVERY DAY. 28 00:01:30,551 --> 00:01:34,310 THAT'S ENOUGH MILK FOR 75 PEOPLE. 29 00:01:34,310 --> 00:01:36,379 GOOD WORK, DAISY. 30 00:01:36,379 --> 00:01:39,000 BUT BEFORE WE GO OVERBOARD WITH PRAISE, 31 00:01:39,000 --> 00:01:42,655 EVEN DAISY WILL ADMIT THAT SHE'S HAD HELP, 32 00:01:42,655 --> 00:01:44,482 BECAUSE LURKING INSIDE HER MASSIVE 33 00:01:44,482 --> 00:01:50,034 50-GALLON VAT-LIKE STOMACH ARE A QUADRILLION LITTLE HELPERS. 34 00:01:50,034 --> 00:01:53,931 REALLY, IT'S THESE GUYS, THE THOUSANDS OF SPECIES 35 00:01:53,931 --> 00:01:57,896 OF MICRO-BUG LIVING INSIDE THIS ALIEN STOMACH WORLD, 36 00:01:57,896 --> 00:02:02,896 WHO DO ALL OF THE WORK OF BREAKING DOWN GRASS. 37 00:02:02,896 --> 00:02:07,655 STILL, IT'S DAISY'S JOB TO KEEP HER LITTLE WORKERS HAPPY. 38 00:02:07,655 --> 00:02:13,655 AND TO DO THAT, SHE HAS TO CHEW A LOT. 39 00:02:13,655 --> 00:02:15,896 WHEN DAISY FIRST SWALLOWS THE GRASS, 40 00:02:15,896 --> 00:02:21,137 IT'S STILL WAY TOO TOUGH FOR THOSE MICRO-BUGS TO BREAK DOWN. 41 00:02:21,137 --> 00:02:23,689 SO, TO HELP THE LITTLE GUYS OUT, AFTER CHEWING 42 00:02:23,689 --> 00:02:28,275 AND SWALLOWING THE GRASS ONCE, SHE DOES IT AGAIN. 43 00:02:28,275 --> 00:02:32,517 DAISY BURPS UP THE HALF-EATEN GRASS, NOW KNOWN AS CUD, 44 00:02:32,517 --> 00:02:38,034 BACK INTO HER MOUTH FOR A SECOND AND MORE INTENSIVE CHEWING. 45 00:02:38,034 --> 00:02:40,689 BY GRINDING HER MOLARS EIGHT HOURS A DAY, 46 00:02:40,689 --> 00:02:44,034 DAISY IS ABLE TO BURST THROUGH THE GRASS' TOUGH CELLS 47 00:02:44,034 --> 00:02:47,827 AND TURN IT INTO A KIND OF SLUDGE. 48 00:02:47,827 --> 00:02:52,413 THIS TIME, THE SLUDGE WON'T COME BACK... 49 00:02:52,413 --> 00:02:55,517 BECAUSE IT'S NOW HEAVY ENOUGH TO SINK DOWN THROUGH THE LIGHTER 50 00:02:55,517 --> 00:02:58,103 TOP LAYER OF RECENTLY EATEN GRASS 51 00:02:58,103 --> 00:03:02,448 TO THE BOTTOM OF HER HUGE, CAVERNOUS STOMACH. 52 00:03:02,448 --> 00:03:06,137 AND THIS IS WHERE THOSE BUSY LITTLE MICRO-BUGS GET TO WORK. 53 00:03:06,137 --> 00:03:09,172 ♪♪ 54 00:03:09,172 --> 00:03:13,000 MILLIONS OF BILLIONS OF BACTERIA MUNCH ON THE CARBOHYDRATE 55 00:03:13,000 --> 00:03:16,793 IN THE GRASS JUICE AND EXCRETE FATTY ACIDS. 56 00:03:16,793 --> 00:03:19,827 [ COW MOOS ] 57 00:03:19,827 --> 00:03:23,206 DAISY HAPPILY SOAKS UP THESE FATTY ACIDS 58 00:03:23,206 --> 00:03:26,103 AND USES THEM TO MAKE HER MILK. 59 00:03:26,103 --> 00:03:30,137 IN FACT, IT IS THESE FATTY ACIDS THAT HELP TURN THE MILK WHITE. 60 00:03:30,137 --> 00:03:31,655 [ COW MOOS ] 61 00:03:31,655 --> 00:03:34,137 UNFORTUNATELY, TO MAKE THE FATTY ACIDS, 62 00:03:34,137 --> 00:03:37,448 THE BACTERIA ALSO GIVE OFF RATHER A LOT OF METHANE. 63 00:03:37,448 --> 00:03:38,931 [ COW FARTS ] 64 00:03:38,931 --> 00:03:41,758 DAISY GETS THE BLAME, OF COURSE. 65 00:03:41,758 --> 00:03:45,896 COWS PRODUCE 200 TIMES MORE GAS A DAY THAN WE DO. 66 00:03:45,896 --> 00:03:48,206 [ COW MOOS ] 67 00:03:48,206 --> 00:03:52,689 SO DAISY'S MILK IS REALLY A COMBINATION OF BACTERIA DOO-DOO 68 00:03:52,689 --> 00:03:55,586 WITH A SPLASH OF BUGS THAT HAVE DIED OF OLD AGE 69 00:03:55,586 --> 00:03:59,137 AND BEEN ABSORBED THROUGH HER INTESTINAL WALL! 70 00:03:59,137 --> 00:04:00,896 YUMMY! 71 00:04:00,896 --> 00:04:04,482 AND BY SERVING THE GRASS WELL-CHEWED... 72 00:04:04,482 --> 00:04:07,517 THE LITTLE WORKERS IN DAISY'S MILK-FACTORY STOMACH 73 00:04:07,517 --> 00:04:09,482 ARE OVER THE MOON. 74 00:04:09,482 --> 00:04:11,482 [ COW MOOS ] 75 00:04:16,896 --> 00:04:22,275 RHINOS ARE TOUGH AND FIGHT ROUGH, 76 00:04:22,275 --> 00:04:28,034 WEIGHING UP TO 4 TONS WITH A 35-MILES-PER-HOUR CHARGE. 77 00:04:28,034 --> 00:04:33,724 THE BIGGEST NATURAL KILLER OF A RHINO IS ANOTHER RHINO. 78 00:04:33,724 --> 00:04:36,689 BUT RECENT FILMING OF A HERD OF BLACK RHINOS AT NIGHT 79 00:04:36,689 --> 00:04:38,827 IN AFRICA'S KALAHARI DESERT 80 00:04:38,827 --> 00:04:44,482 REVEALED THAT THEY MAY BE LEADING A SECRET DOUBLE LIFE. 81 00:04:44,482 --> 00:04:47,034 IN FACT, UNDER COVER OF DARKNESS, 82 00:04:47,034 --> 00:04:50,620 RHINOS ARE MORE TENDER AND GENTLE THAN ANYONE KNEW. 83 00:04:50,620 --> 00:04:52,827 ♪♪ 84 00:04:58,724 --> 00:05:00,275 ♪♪ 85 00:05:00,275 --> 00:05:04,551 AT THE RHINO PRIDE SANCTUARY IN LIMPOPO, SOUTH AFRICA, 86 00:05:04,551 --> 00:05:09,068 FOUNDER DR. JANA PRETORIUS HAS A THEORY AS TO WHY RHINOS 87 00:05:09,068 --> 00:05:15,586 MAY BE GRUMPY AND AGGRESSIVE BUT ALSO TOUCHY-FEELY. 88 00:05:15,586 --> 00:05:20,172 AND SHE WANTS TO DEMONSTRATE HER THEORY WITH A NEW ARRIVAL. 89 00:05:20,172 --> 00:05:23,068 HE'S AN ADULT MALE BLACK RHINO. 90 00:05:23,068 --> 00:05:26,413 Pretorious: THIS RHINO BULL IS FULLY GROWN. 91 00:05:26,413 --> 00:05:28,379 HE'S BEEN BROUGHT HERE BEFORE HE MOVES ON 92 00:05:28,379 --> 00:05:30,448 TO THE NEXT WILDLIFE RESERVE. 93 00:05:30,448 --> 00:05:34,724 Narrator: HE'S HAD NO CONTACT WITH HUMANS UNTIL NOW. 94 00:05:34,724 --> 00:05:38,000 Pretorious: HE'S STILL A LITTLE BIT WARY OF US. 95 00:05:38,000 --> 00:05:39,413 ♪♪ 96 00:05:39,413 --> 00:05:41,724 HEY. 97 00:05:41,724 --> 00:05:43,310 COO-COO-COO. 98 00:05:43,310 --> 00:05:45,965 [ RHINO GRUNTS ] 99 00:05:45,965 --> 00:05:48,310 Narrator: WITH HIS HORN AIMED RIGHT AT HER 100 00:05:48,310 --> 00:05:50,655 AND HIS FEET PAWING THE GROUND, 101 00:05:50,655 --> 00:05:54,068 THIS RHINO IS DISPLAYING AGGRESSION. 102 00:05:54,068 --> 00:05:56,310 JANA THINKS HE'S BEHAVING THIS WAY 103 00:05:56,310 --> 00:05:59,448 BECAUSE RHINOS HAVE VERY BAD EYESIGHT 104 00:05:59,448 --> 00:06:03,379 AND HIS BEHAVIOR MAY COME FROM INSECURITY. 105 00:06:03,379 --> 00:06:04,965 Pretorious: BECAUSE THEY CAN'T SEE WELL, 106 00:06:04,965 --> 00:06:08,862 THEY'RE VERY STRESSED ABOUT SUDDEN MOVES AND SUDDEN SOUNDS, 107 00:06:08,862 --> 00:06:12,137 AND THAT'S WHY THEY'LL SEEM AS IF THEY WANT TO BE AGGRESSIVE. 108 00:06:12,137 --> 00:06:13,655 BUT ACTUALLY, THEY'RE JUST BEING, 109 00:06:13,655 --> 00:06:15,758 "OH, WHAT'S THAT, WHAT'S THAT?" 110 00:06:15,758 --> 00:06:18,379 Narrator: SO JANA TALKS CALMLY TO THE RHINO 111 00:06:18,379 --> 00:06:20,206 TO MAKE HIM RELAXED IN HER COMPANY. 112 00:06:20,206 --> 00:06:23,000 Pretorious: COO. 113 00:06:23,000 --> 00:06:25,275 COO-COO-COO. 114 00:06:25,275 --> 00:06:29,965 Narrator: AND SLOWLY, THIS WILD RHINO CALMS DOWN 115 00:06:29,965 --> 00:06:32,620 AND STEPS CLOSER. 116 00:06:32,620 --> 00:06:37,000 HIS GUARD IS DOWN, AND THE BIG BULL RHINO DOESN'T JUST RELAX -- 117 00:06:37,000 --> 00:06:40,931 HE ACTUALLY APPROACHES TO BE TOUCHED. 118 00:06:40,931 --> 00:06:42,793 SO, A LOT OF PEOPLE PERCEIVE RHINOS 119 00:06:42,793 --> 00:06:44,862 JUST AS BEING VERY AGGRESSIVE. 120 00:06:44,862 --> 00:06:46,310 BUT IF YOU SPEND TIME WITH HIM, 121 00:06:46,310 --> 00:06:49,655 YOU'LL END UP BEING ABLE TO SCRATCH HIM AND TALK TO HIM. 122 00:06:49,655 --> 00:06:53,482 IT'S A WAY OF ACTUALLY CALMING THEM DOWN. 123 00:06:53,482 --> 00:06:55,655 Narrator: JANA'S WORK SHOWS THAT RHINOS 124 00:06:55,655 --> 00:06:58,137 LIKE TO FEEL CONTACT WITH OTHER RHINOS, 125 00:06:58,137 --> 00:07:01,551 BUT THE DESIRE IS STRONGEST IN THE YOUNGSTERS. 126 00:07:01,551 --> 00:07:04,482 Pretorious: THEY ALWAYS, LIKE, TUCK IN TOGETHER, 127 00:07:04,482 --> 00:07:06,620 AND THEY'LL PUT THEIR HEADS ON TOP OF EACH OTHER 128 00:07:06,620 --> 00:07:10,620 OR THEY'LL LIE HEAD TO FEET. 129 00:07:10,620 --> 00:07:12,965 Narrator: IN THE WILD, YOUNG RHINOS ARE VULNERABLE 130 00:07:12,965 --> 00:07:16,620 TO HYENAS, CROCODILES, AND LIONS. 131 00:07:16,620 --> 00:07:17,896 JANA BELIEVES 132 00:07:17,896 --> 00:07:19,931 BY STAYING IN TOUCHING DISTANCE OF EACH OTHER, 133 00:07:19,931 --> 00:07:22,310 THEY FEEL MORE SECURE AND PROTECTED. 134 00:07:22,310 --> 00:07:24,896 ♪♪ 135 00:07:24,896 --> 00:07:26,689 ONE THING THAT'S SURPRISING 136 00:07:26,689 --> 00:07:29,793 IS THAT RHINOS CAN FEEL A GENTLE STROKE AT ALL, 137 00:07:29,793 --> 00:07:34,172 BECAUSE THEIR SKIN IS THE THICKEST OF ANY LAND ANIMAL'S. 138 00:07:34,172 --> 00:07:36,965 Pretorious: OOH, YES. 139 00:07:36,965 --> 00:07:40,034 Narrator: DESIGNED TO WITHSTAND HORN-TO-HORN COMBAT, 140 00:07:40,034 --> 00:07:43,172 IT'S MADE FROM TOUGH STRANDS OF COLLAGEN 141 00:07:43,172 --> 00:07:45,655 MATTED TOGETHER IN A CROSS LATTICE, 142 00:07:45,655 --> 00:07:49,896 CREATING A TWO INCH-THICK FORM OF NATURAL CHAIN MAIL. 143 00:07:49,896 --> 00:07:53,862 BUT WHAT'S ASTONISHING IS THE SURFACE OF THE RHINO'S ARMOR 144 00:07:53,862 --> 00:07:56,482 IS COVERED IN MILLIONS OF NERVES, 145 00:07:56,482 --> 00:07:57,827 MAKING THEIR THICK SKIN 146 00:07:57,827 --> 00:08:01,344 SENSITIVE TO THE SLIGHTEST TOUCH. 147 00:08:01,344 --> 00:08:03,103 AND JANA'S DISCOVERED RHINOS LOVE 148 00:08:03,103 --> 00:08:06,586 NOTHING MORE THAN A GOOD RUB OR A TICKLE. 149 00:08:06,586 --> 00:08:08,344 Pretorious: ONCE THEY GET USED TO IT, 150 00:08:08,344 --> 00:08:10,103 YOU ARE PRETTY MUCH FATED FOR LIFE 151 00:08:10,103 --> 00:08:12,034 TO GIVE THEM BELLY RUBS. 152 00:08:12,034 --> 00:08:13,862 YEAH, OVER. OH, YES. 153 00:08:13,862 --> 00:08:19,310 ♪♪ 154 00:08:19,310 --> 00:08:21,310 Narrator: SO... 155 00:08:21,310 --> 00:08:23,413 NOT SO TOUGH NOW, ARE YA, BIG GUY? 156 00:08:23,413 --> 00:08:29,241 ♪♪ 157 00:08:29,241 --> 00:08:33,620 COMING UP, POUND FOR POUND, THE LOUDEST ANIMAL ON EARTH... 158 00:08:33,620 --> 00:08:35,620 [ ELEPHANT TRUMPETS ] 159 00:08:35,620 --> 00:08:38,931 ...AND THE FASTEST EATER ON THE PLANET. 160 00:08:38,931 --> 00:08:41,758 ♪♪ 161 00:08:45,413 --> 00:08:47,448 ♪♪ 162 00:08:47,448 --> 00:08:49,517 [ ROOSTER CROWS ] 163 00:08:49,517 --> 00:08:51,310 [ CATS MEOWING ] 164 00:08:51,310 --> 00:08:53,965 Narrator: THE ANIMAL KINGDOM CAN BE A NOISY PLACE... 165 00:08:53,965 --> 00:08:56,275 [ WOLF HOWLS ]...FROM THE MALE ELK... 166 00:08:56,275 --> 00:08:57,413 [ ELK SHRIEKS ] 167 00:08:57,413 --> 00:08:59,689 ...THAT SCREAMS AT THE TOP OF ITS LUNGS 168 00:08:59,689 --> 00:09:02,586 TO THE GRUNTING ROAR OF A MALE KOALA. 169 00:09:02,586 --> 00:09:04,448 [ KOALA GRUNTING ] 170 00:09:04,448 --> 00:09:07,034 [ OWL CHIRPS ][ WOLF HOWLS ] 171 00:09:07,034 --> 00:09:08,517 [ ELEPHANT TRUMPETS ] 172 00:09:08,517 --> 00:09:10,448 [ LION ROARS ]BUT POUND FOR POUND... 173 00:09:14,931 --> 00:09:16,448 ♪♪ 174 00:09:16,448 --> 00:09:19,344 WHEN IT COMES TO VOLUME RELATIVE TO SIZE, 175 00:09:19,344 --> 00:09:25,275 THE HALF-INCH MALE WATER BOATMAN IS THE UNDISPUTED KING OF NOISE. 176 00:09:25,275 --> 00:09:27,103 OKAY, YOU MAY NOT BE ABLE TO HEAR 177 00:09:27,103 --> 00:09:30,241 THIS INSECT'S TRUE LOUDNESS ABOVE THE WATER, 178 00:09:30,241 --> 00:09:31,896 BUT UNDERWATER... 179 00:09:31,896 --> 00:09:33,241 [ CHIRPING ] 180 00:09:33,241 --> 00:09:36,931 ...THIS CHIRPING CAN HIT 99 DECIBELS. 181 00:09:36,931 --> 00:09:40,551 THAT'S EQUIVALENT TO THE RUMBLE OF A TRACTOR. 182 00:09:40,551 --> 00:09:43,103 UNUSUALLY, IT MAKES ALL THAT NOISE 183 00:09:43,103 --> 00:09:47,034 BY RUBBING ITS PENIS ACROSS ITS ABDOMEN. 184 00:09:47,034 --> 00:09:49,448 WELL, THAT'S ONE WAY TO ATTRACT THE LADIES. 185 00:09:49,448 --> 00:09:54,758 BUT IT'S DEFINITELY NOT THE LOUDEST ANIMAL ON EARTH. 186 00:09:54,758 --> 00:09:59,000 NOT RELATIVETO ITS SIZE BUT BECAUSEOF ITS SIZE, 187 00:09:59,000 --> 00:10:02,931 THE ELEPHANT USES ITS GIGANTIC TRUNK TO MAKE A BIGGER NOISE. 188 00:10:02,931 --> 00:10:04,275 [ ELEPHANT TRUMPETS ] 189 00:10:04,275 --> 00:10:08,551 THAT MASSIVE NOSE ACTS AS A HUGE AMPLIFICATION CHAMBER, 190 00:10:08,551 --> 00:10:13,275 CREATING A TRUMPET WHICH HITS 117 DECIBELS, 191 00:10:13,275 --> 00:10:15,620 ABOUT AS LOUD AS A THUNDERCLAP. 192 00:10:15,620 --> 00:10:17,448 [ THUNDER CRASHES ] 193 00:10:17,448 --> 00:10:19,517 [ BABY CRYING ] 194 00:10:19,517 --> 00:10:22,482 BUT USING JUST ITS TINY LUNGS, 195 00:10:22,482 --> 00:10:26,344 A CRYING BABY DEFEATS EVEN THE MIGHTIEST ELEPHANT, 196 00:10:26,344 --> 00:10:32,551 CLOCKING UP TO 120 DECIBELS, THE SAME AS A ROCK CONCERT. 197 00:10:32,551 --> 00:10:34,103 ♪♪ 198 00:10:34,103 --> 00:10:35,620 [ MONKEY HOWLING ] 199 00:10:35,620 --> 00:10:39,379 BUT SINGING BEATS CRYING. 200 00:10:39,379 --> 00:10:41,413 HOWLER MONKEYS HAVE A HOWL 201 00:10:41,413 --> 00:10:46,793 AS LOUD AS A JET ENGINE AT 140 DECIBELS, 202 00:10:46,793 --> 00:10:51,137 THE LOUDEST CALL OF ANY ANIMAL ON LAND. 203 00:10:51,137 --> 00:10:55,793 BUT THIS IS NOT THE LOUDEST ANIMAL ON THE ENTIRE PLANET. 204 00:10:55,793 --> 00:11:01,689 THAT SOUND BELONGS TO THESE HUGE, MAJESTIC CREATURES. 205 00:11:01,689 --> 00:11:04,448 THE MIGHTY SPERM WHALE SENDS OUT A SERIES 206 00:11:04,448 --> 00:11:09,275 OF SHORT 100-MILLISECOND-LONG CLICKS TO ECHOLOCATE THEIR PREY. 207 00:11:09,275 --> 00:11:11,586 ♪♪ 208 00:11:11,586 --> 00:11:14,310 THE WHALE IS ABLE TO TURN THE CLICK'S VOLUME UP 209 00:11:14,310 --> 00:11:19,620 TO BEYOND DEAFENING BY USING THEIR HUGE HEAD AS AN AMPLIFIER. 210 00:11:19,620 --> 00:11:22,793 THE WHALE FORCES AIR THROUGH ITS NASAL PASSAGE 211 00:11:22,793 --> 00:11:25,448 TO A PAIR OF CLAPPERS CALLED MONKEY LIPS, 212 00:11:25,448 --> 00:11:28,793 WHICH CLAP SHUT, CREATING A SINGLE CLICK. 213 00:11:28,793 --> 00:11:32,448 THIS CLICK IS THEN AMPLIFIED SEVERAL TIMES 214 00:11:32,448 --> 00:11:34,275 AS IT TRAVELS BACKWARD AND FORWARD 215 00:11:34,275 --> 00:11:37,448 THROUGH THE INSIDE OF THE SPERM WHALE'S HEAD. 216 00:11:37,448 --> 00:11:40,137 FINALLY, THE CLICK REACHES AN AREA OF THE HEAD 217 00:11:40,137 --> 00:11:43,931 THAT FOCUSES THE SOUND INTO A UNIQUELY CONCENTRATED 218 00:11:43,931 --> 00:11:46,517 AND LITERALLY DEAFENING NOISE. 219 00:11:49,862 --> 00:11:53,379 OUR EARS CAN'T COPE WITH VERY LOUD SOUNDS. 220 00:11:53,379 --> 00:11:58,758 AT 165 DECIBELS, OUR EARDRUMS RUPTURE. 221 00:11:58,758 --> 00:12:00,827 ABOVE THE WAVES, WE'RE FINE 222 00:12:00,827 --> 00:12:03,965 BECAUSE JUST 1% OF THE SOUND OF THE WHALE'S CLICKS 223 00:12:03,965 --> 00:12:07,862 PASSES FROM THE WATER AND INTO THE AIR. 224 00:12:07,862 --> 00:12:14,724 BUT UNDERWATER, EACH CLICK NOISE REACHES 235 DECIBELS. 225 00:12:14,724 --> 00:12:19,000 THAT'S LOUDER THAN A TON OF DYNAMITE EXPLODING. 226 00:12:19,000 --> 00:12:22,896 NOT ONLY WILL THE SPERM WHALE'S CLICKS RUPTURE OUR EARDRUMS, 227 00:12:22,896 --> 00:12:25,620 BUT THE REPETITIVE CLICKING HAS A FREQUENCY 228 00:12:25,620 --> 00:12:28,448 THAT COULD VIBRATE A DIVER TO DEATH. 229 00:12:28,448 --> 00:12:30,793 [ WHALE CLICKING ] 230 00:12:30,793 --> 00:12:33,793 SO, WHETHER ABOVE OR BELOW THE OCEAN, 231 00:12:33,793 --> 00:12:38,586 YOU CAN'T IGNORE THE UNDISPUTED NOISIEST ANIMAL ON EARTH. 232 00:12:38,586 --> 00:12:43,448 ♪♪ 233 00:12:43,448 --> 00:12:45,586 COMING UP... 234 00:12:45,586 --> 00:12:49,172 WHY DOES A RATTLESNAKE ALWAYS LET GO OF ITS PREY? 235 00:12:49,172 --> 00:12:53,068 AND THE CRITTER WITH THE MOST INCREDIBLE NOSE. 236 00:12:53,068 --> 00:12:55,724 ♪♪ 237 00:12:59,344 --> 00:13:02,965 ♪♪ 238 00:13:02,965 --> 00:13:04,068 [ TAIL RATTLES ] 239 00:13:04,068 --> 00:13:07,000 Narrator: A RATTLE AND THEN... 240 00:13:07,000 --> 00:13:09,344 A STRIKE. 241 00:13:09,344 --> 00:13:13,068 IT LOOKS LIKE GAME OVER FOR THIS MOUSE. 242 00:13:13,068 --> 00:13:16,620 OR MAYBE NOT. 243 00:13:16,620 --> 00:13:19,275 THE SNAKE'S RELEASED IT. 244 00:13:19,275 --> 00:13:21,551 WHAT IS IT THINKING? 245 00:13:26,620 --> 00:13:28,241 ♪♪ 246 00:13:28,241 --> 00:13:30,344 IN HOEDSPRUIT, SOUTH AFRICA, 247 00:13:30,344 --> 00:13:33,103 ONE OF THE WORLD'S LEADING REPTILE EXPERTS, 248 00:13:33,103 --> 00:13:36,068 DONALD STRYDOM, STUDIES VERY DANGEROUS SNAKES 249 00:13:36,068 --> 00:13:38,241 FROM ALL OVER THE WORLD. 250 00:13:38,241 --> 00:13:42,068 ♪♪ 251 00:13:42,068 --> 00:13:43,586 [ SNAKE RATTLES ] 252 00:13:43,586 --> 00:13:45,413 Strydom: YEAH, WHAT WE HAVE HERE 253 00:13:45,413 --> 00:13:48,482 IS A WESTERN DIAMONDBACK RATTLESNAKE -- BEAUTIFUL ANIMAL. 254 00:13:48,482 --> 00:13:52,275 THESE GUYS ARE FROM THE AMERICAS. 255 00:13:52,275 --> 00:13:55,448 THEY JUST ARE MASTERS IN HUNTING. 256 00:13:55,448 --> 00:13:57,034 THEY DON'T CHASE DOWN THEIR PREY. 257 00:13:57,034 --> 00:13:59,310 THEY'LL LIE THERE CAMOUFLAGED SOMEWHERE 258 00:13:59,310 --> 00:14:03,000 AND JUST WAIT A DAY OR TWO, A WEEK, A MONTH, OR MORE. 259 00:14:03,000 --> 00:14:04,413 I MEAN, THAT SNAKE CAN GO WITHOUT FOOD 260 00:14:04,413 --> 00:14:06,517 FOR LIKE ONE AND A HALF TO TWO YEARS. 261 00:14:06,517 --> 00:14:07,758 [ SNAKE RATTLES ] 262 00:14:07,758 --> 00:14:10,241 Narrator: AFTER A YEAR OF WAITING FOR DINNER, 263 00:14:10,241 --> 00:14:14,689 YOU'D THINK THE RATTLESNAKE WOULD WANT TO HOLD ON TO IT. 264 00:14:14,689 --> 00:14:18,965 BUT AFTER INJECTING A DROP-SIZED DOSE OF VENOM, 265 00:14:18,965 --> 00:14:23,448 THEY HAVE A GOOD REASON FOR RELEASING THEIR PREY. 266 00:14:23,448 --> 00:14:26,551 THAT RAT CAN TURN AROUND AND BITE THE SNAKE. 267 00:14:26,551 --> 00:14:27,862 IT COULD KILL THE SNAKE. 268 00:14:27,862 --> 00:14:30,310 IT WOULD BITE INTO THE HEAD, THE EYES, AND KILL IT. 269 00:14:30,310 --> 00:14:33,275 Narrator: SO THE SNAKE AVOIDS BEING BITTEN BACK, 270 00:14:33,275 --> 00:14:36,275 BUT LETTING GO CREATES ANOTHER PROBLEM. 271 00:14:36,275 --> 00:14:38,931 ♪♪ 272 00:14:38,931 --> 00:14:41,241 Strydom: THAT PREY IS GONNA RUN, 273 00:14:41,241 --> 00:14:43,655 AND THE SNAKE HAS TO NOW LOCATE THAT PREY. 274 00:14:43,655 --> 00:14:45,758 Narrator: IT TAKES AROUND TWO MINUTES 275 00:14:45,758 --> 00:14:48,448 FOR THE VENOM TO INCAPACITATE THE PREY. 276 00:14:48,448 --> 00:14:53,344 BY THAT TIME, THE ENVENOMATED RODENT COULD BE ANYWHERE. 277 00:14:53,344 --> 00:14:57,344 SO HOW DOES THE SNAKE FIND ITS PREY? 278 00:14:57,344 --> 00:15:00,965 RATTLESNAKES HAVE AN INCREDIBLE SENSE OF SMELL. 279 00:15:00,965 --> 00:15:05,206 ONE IDEA IS THAT THE SNAKE COULD FOLLOW THE PREY'S SCENT TRAIL, 280 00:15:05,206 --> 00:15:08,241 EXCEPT, OUT HERE, THERE ARE HUNDREDS 281 00:15:08,241 --> 00:15:10,241 OF OTHER RODENT SCENT TRAILS CRISSCROSSING 282 00:15:10,241 --> 00:15:12,241 AND MASKING THE SCENT OF THE ANIMAL 283 00:15:12,241 --> 00:15:16,586 THAT'LL SOON BE MOTIONLESS AND EASY TO GRAB. 284 00:15:16,586 --> 00:15:19,586 BUT ONE THING SETS THE BITTEN RAT APART 285 00:15:19,586 --> 00:15:23,172 FROM ALL THE OTHER CREATURES. 286 00:15:23,172 --> 00:15:27,827 IT HAS THIS RATTLESNAKE'S VENOM COURSING THROUGH ITS VEINS. 287 00:15:27,827 --> 00:15:31,896 DONALD THINKS THE SNAKE COULD BE USING THE SCENT OF ITS OWN VENOM 288 00:15:31,896 --> 00:15:35,689 TO TRACK AND FIND THE DYING PREY. 289 00:15:35,689 --> 00:15:37,275 TO TEST THE THEORY, 290 00:15:37,275 --> 00:15:42,241 DONALD NEEDS TO HARVEST THE LETHAL RATTLESNAKE VENOM. 291 00:15:42,241 --> 00:15:44,241 Strydom: IF THAT WERE INTO A MOUSE, 292 00:15:44,241 --> 00:15:45,931 THAT WOULD BE A MASSIVE OVERKILL, 293 00:15:45,931 --> 00:15:48,137 BUT THAT'S PROBABLY SPOT-ON TO KILL ME. 294 00:15:48,137 --> 00:15:50,896 ♪♪ 295 00:15:50,896 --> 00:15:53,724 Narrator: TO MAKE TRAILS FOR THE SNAKE TO FOLLOW, 296 00:15:53,724 --> 00:15:56,517 DONALD HAS TWO SCENTED SPONGES. 297 00:15:56,517 --> 00:15:59,965 Strydom: SPONGE NUMBER ONE IS PURELY RAT. 298 00:15:59,965 --> 00:16:03,172 SPONGE NUMBER TWO IS GOING TO BE RAT, 299 00:16:03,172 --> 00:16:05,413 AS WELL AS SNAKE VENOM. 300 00:16:05,413 --> 00:16:08,965 ♪♪ 301 00:16:08,965 --> 00:16:12,137 Narrator: DONALD MARKS OUT TWO SCENT TRAILS. 302 00:16:12,137 --> 00:16:15,172 TO THE LEFT IS HEALTHY RAT SCENT. 303 00:16:15,172 --> 00:16:21,034 TO THE RIGHT IS RAT SCENT PLUS THIS SNAKE'S OWN VENOM. 304 00:16:21,034 --> 00:16:23,862 WILL THE SNAKE FOLLOW THE PURE RAT SCENT, 305 00:16:23,862 --> 00:16:27,448 OR WILL IT FOLLOW THE SMELL WITH ITS OWN VENOM? 306 00:16:27,448 --> 00:16:28,758 Strydom: THERE IT'S DOING IT. NOW YOU SEE. 307 00:16:28,758 --> 00:16:29,931 LOOK HOW THE HEAD'S MOVING, 308 00:16:29,931 --> 00:16:32,241 AND THAT TYPICAL LEFT AND RIGHT MOVEMENT 309 00:16:32,241 --> 00:16:35,517 AND LOTS OF TONGUE FLICKING AS IT MOVES ALONG. 310 00:16:35,517 --> 00:16:39,793 Narrator: THE TONGUE IS LICKING THE AIR FOR SCENT. 311 00:16:39,793 --> 00:16:42,827 EACH LICK COLLECTS TINY SCENT PARTICLES 312 00:16:42,827 --> 00:16:45,931 AND DELIVERS THEM TO A UNIQUE SCENT ORGAN, 313 00:16:45,931 --> 00:16:50,448 A PATCH OF ODOR-SENSING CELLS INSIDE THE MOUTH. 314 00:16:50,448 --> 00:16:52,413 THE REASON THE TONGUE IS FORKED 315 00:16:52,413 --> 00:16:54,827 IS SO THAT IT CAN DIFFERENTIATE ODOR PARTICLES 316 00:16:54,827 --> 00:16:57,793 COMING FROM THE LEFT AND RIGHT SIDE. 317 00:16:57,793 --> 00:17:02,137 THIS HELPS THE SNAKE FIGURE OUT THE DIRECTION OF THE PREY. 318 00:17:02,137 --> 00:17:04,275 WHAT IT'S DOING IS OBVIOUSLY IT'S GOING LEFT AND RIGHT, 319 00:17:04,275 --> 00:17:08,241 SO IT NEEDS TO REALLY SEE WHERE THE DOMINANT SMELL OF SCENT IS. 320 00:17:08,241 --> 00:17:10,413 Narrator: IT'S REACHED THE POINT IN THE TRAIL 321 00:17:10,413 --> 00:17:13,275 WHERE DONALD SEPARATED THE SPONGES... 322 00:17:13,275 --> 00:17:14,482 AND GOES LEFT, 323 00:17:14,482 --> 00:17:17,448 TOWARDS THE SPONGE WITHOUT VENOM. 324 00:17:17,448 --> 00:17:22,413 ♪♪ 325 00:17:22,413 --> 00:17:25,103 BUT IT'S CHANGING DIRECTIONS. 326 00:17:25,103 --> 00:17:26,551 IT'S NOT GOING TOWARDS THE SPONGE 327 00:17:26,551 --> 00:17:27,931 WITH JUST THE SMELL OF PREY. 328 00:17:27,931 --> 00:17:29,586 IT'S GOING STRAIGHT TOWARDS THAT SPONGE 329 00:17:29,586 --> 00:17:32,758 WITH THE SMELL OF ITS VENOM. 330 00:17:32,758 --> 00:17:36,413 THE SNAKE IS HOMING STRAIGHT IN FOR ITS PREY. 331 00:17:36,413 --> 00:17:41,344 ♪♪ 332 00:17:41,344 --> 00:17:44,517 Narrator: BY USING THE SMELL OF THE RATTLESNAKE'S OWN VENOM, 333 00:17:44,517 --> 00:17:46,103 THE RATTLER CAN CUT THROUGH 334 00:17:46,103 --> 00:17:50,758 ALL THE OTHER DISTRACTING SCENT TRAILS TO FIND ITS DINNER. 335 00:17:50,758 --> 00:17:52,931 BUT THE RATTLESNAKE ISN'T SMELLING THE VENOM 336 00:17:52,931 --> 00:17:55,965 IT HAS INJECTED INTO THE RAT'S BODY. 337 00:17:55,965 --> 00:17:58,379 AFTER THE RATTLESNAKE BITES, 338 00:17:58,379 --> 00:18:02,586 IT MAKES SURE TO SPRAY SOME VENOM ON THE RAT'S FUR. 339 00:18:02,586 --> 00:18:05,586 Strydom: THIS SPLATTER ON HERE IS ABOUT THE AMOUNT OF SPLATTER 340 00:18:05,586 --> 00:18:09,206 THAT IT WOULD HAVE ON THE PREY ITEM. 341 00:18:09,206 --> 00:18:12,965 Narrator: THIS WAY, THE SCENT OF THE VENOM IS STRONGER 342 00:18:12,965 --> 00:18:17,241 AND MEANS A RATTLESNAKE IS NEVER LATE TO LUNCH. 343 00:18:20,103 --> 00:18:24,551 COMING UP... THE WEIRDEST NOSE ON THE PLANET. 344 00:18:24,551 --> 00:18:28,172 ♪♪ 345 00:18:31,689 --> 00:18:36,310 ♪♪ 346 00:18:36,310 --> 00:18:38,896 Narrator: THE NATURAL WORLD IS TEEMING WITH ANIMALS 347 00:18:38,896 --> 00:18:44,379 THAT HAVE EVOLVED UNIQUE AND BIZARRE NASAL APPENDAGES, BUT... 348 00:18:48,655 --> 00:18:50,172 ♪♪ 349 00:18:50,172 --> 00:18:53,137 THE MOST BIZARRE NOSE ON THE PLANET 350 00:18:53,137 --> 00:18:57,000 MAY BE RIGHT BENEATH YOUR FEET, BECAUSE LIVING IN TUNNELS 351 00:18:57,000 --> 00:18:59,413 UNDERNEATH THE EAST COAST OF NORTH AMERICA 352 00:18:59,413 --> 00:19:02,275 IS AN ANIMAL WITH A NOSE SO WEIRD 353 00:19:02,275 --> 00:19:08,241 THAT THE ANIMAL'S BEEN NAMED AFTER IT -- THE STAR-NOSED MOLE. 354 00:19:08,241 --> 00:19:10,551 SCURRYING THROUGH TOTAL DARKNESS, 355 00:19:10,551 --> 00:19:14,275 THIS ALMOST-BLIND MOLE HAS NO NEED FOR EYESIGHT 356 00:19:14,275 --> 00:19:17,724 BECAUSE AMAZINGLY, THAT STRANGE NOSE IS 357 00:19:17,724 --> 00:19:21,551 THE MOST SENSITIVE TOUCH ORGAN OF ANY MAMMAL ON THE PLANET, 358 00:19:21,551 --> 00:19:24,034 ALLOWING THIS WEIRD-LOOKING MOLE 359 00:19:24,034 --> 00:19:28,862 TO SEE ITS DARK WORLD BY FEELING IT. 360 00:19:28,862 --> 00:19:32,206 EVERY INCH OF THOSE 22 MOBILE TENTACLES 361 00:19:32,206 --> 00:19:35,137 ARE COVERED IN THOUSANDS OF TOUCH RECEPTORS, 362 00:19:35,137 --> 00:19:40,000 EACH BUMP THE WIDTH OF A HUMAN HAIR. 363 00:19:40,000 --> 00:19:43,724 INSIDE EACH BUMP IS A RING OF NERVE FIBERS 364 00:19:43,724 --> 00:19:45,793 THAT FEEL IN EVERY DIRECTION 365 00:19:45,793 --> 00:19:49,172 TO CREATE A 3-D MAP OF WHAT IT TOUCHES, 366 00:19:49,172 --> 00:19:53,413 SO IT SEES WITH ITS NOSE IN UNBELIEVABLE DETAIL. 367 00:19:53,413 --> 00:19:55,586 ♪♪ 368 00:19:55,586 --> 00:20:01,172 IN TOTAL, THE MOLE'S NOSE HAS A NETWORK OF 100,000 NERVES, 369 00:20:01,172 --> 00:20:04,896 FIVE TIMES MORE NERVES THAN IN OUR HANDS, 370 00:20:04,896 --> 00:20:10,137 ALL PACKED INTO A NOSE SMALLER THAN A FINGERTIP. 371 00:20:10,137 --> 00:20:13,137 USING INFORMATION FROM ALL THESE NERVES, 372 00:20:13,137 --> 00:20:16,517 THE MOLE'S BRAIN BUILDS UP A PICTURE OF WHAT IT'S FEELING. 373 00:20:16,517 --> 00:20:20,793 IT'S A KIND OF TOUCHY-FEELY "SMELL-O-VISION." 374 00:20:20,793 --> 00:20:25,551 IN FACT, IT TAKES THE MOLE JUST 120 MILLISECONDS TO TOUCH, 375 00:20:25,551 --> 00:20:28,413 IDENTIFY, AND CONSUME PREY. 376 00:20:28,413 --> 00:20:32,206 THAT'S FASTER THAN A BLINK OF AN EYE. 377 00:20:32,206 --> 00:20:39,034 IN MAMMAL WORLD, THIS MOLE IS THE FASTEST EATER ON THE PLANET. 378 00:20:39,034 --> 00:20:42,034 SO, IN A COMPETITION FOR STRANGEST SNIFFER, 379 00:20:42,034 --> 00:20:46,689 THIS AMAZING AND UNIQUE CRITTER WINS BY A NOSE. 380 00:20:46,689 --> 00:20:48,000 ♪♪ 29297

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