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00:00:03,437 --> 00:00:07,305
Narrator: They're the
stuff of nightmares.
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00:00:07,308 --> 00:00:11,710
Giant snakes of
immense strength.
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00:00:11,779 --> 00:00:15,047
With a strike faster than
the blink of an eye.
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00:00:17,451 --> 00:00:20,185
[hissing]
5
00:00:20,187 --> 00:00:22,521
African rock python's...
6
00:00:23,524 --> 00:00:26,392
A battery of finely tuned
tracking sensors...
7
00:00:27,928 --> 00:00:30,229
The better to find you with.
8
00:00:33,067 --> 00:00:35,834
Rows of razor sharp teeth...
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00:00:36,804 --> 00:00:39,171
The better to grip you with.
10
00:00:41,809 --> 00:00:48,213
Gigantic... Ancient...
Aggressive.
11
00:00:48,282 --> 00:00:52,484
[chicken squawking]
12
00:00:55,756 --> 00:00:59,425
This is squeeze, an
eight-year-old rock python
13
00:00:59,493 --> 00:01:03,762
Propelled by the same primordial
needs that drove her ancestors
14
00:01:03,831 --> 00:01:06,632
In the days when dinosaurs
walked the earth.
15
00:01:06,700 --> 00:01:11,837
She can hunt in any terrain...
At any time of day...
16
00:01:11,839 --> 00:01:17,509
For virtually any prey.
17
00:01:17,578 --> 00:01:21,647
But, squeeze is a mother, so
others depend on her too.
18
00:01:21,715 --> 00:01:24,650
... And bringing her young into
the world safely
19
00:01:24,718 --> 00:01:27,786
Is no walk in the park.
20
00:01:27,855 --> 00:01:30,055
♪
21
00:01:30,124 --> 00:01:33,258
There will come a time when
she has to choose
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00:01:33,260 --> 00:01:38,263
Between her survival and theirs.
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00:01:53,680 --> 00:01:58,951
13 feet long...
70 pounds of muscle...
24
00:02:01,021 --> 00:02:03,955
Squeeze is covered in the
yellow, chestnut
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00:02:03,958 --> 00:02:06,625
And brown splotches that
help her blend in
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00:02:06,693 --> 00:02:08,193
With the environment.
27
00:02:11,498 --> 00:02:16,468
She hasn't eaten in two weeks.
For good reason.
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00:02:18,639 --> 00:02:21,707
She's carrying a clutch of
just-developing eggs.
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00:02:21,775 --> 00:02:26,745
She can't eat a big meal - not
while they're gestating inside.
30
00:02:34,254 --> 00:02:39,391
But she's hungry; a snack
would be just the thing.
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00:02:40,060 --> 00:02:43,461
Something that in her sluggish
state might not require
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00:02:43,464 --> 00:02:47,599
A lot of work.
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00:02:47,601 --> 00:02:50,836
She waits for nightfall.
34
00:02:56,877 --> 00:03:01,013
Like most snakes, the rock
python has poor vision,
35
00:03:01,081 --> 00:03:04,049
But that doesn't mean
it can't find you.
36
00:03:06,086 --> 00:03:10,956
Squeeze can sense body heat -
with incredible accuracy.
37
00:03:13,627 --> 00:03:16,028
The scales on her lips
have “pit organs”
38
00:03:16,096 --> 00:03:20,232
Which are full of
heat-sensitive receptors.
39
00:03:20,234 --> 00:03:22,634
Nerves carry signals
from the receptors
40
00:03:22,703 --> 00:03:27,673
To the brain where they're
converted into images...
41
00:03:33,714 --> 00:03:38,450
Like goldilocks, squeeze is
looking for something
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00:03:38,518 --> 00:03:40,385
Just the right size.
43
00:03:40,454 --> 00:03:45,424
Not too small... A frog is
hardly worth the effort.
44
00:03:51,865 --> 00:03:56,735
Not too big... It would be hard
even for a rock python
45
00:03:56,803 --> 00:03:59,304
To swallow a cow.
46
00:04:05,679 --> 00:04:09,281
But here's something just right.
47
00:04:10,551 --> 00:04:15,020
This rabbit has come to dine
on some tasty cabbages.
48
00:04:19,560 --> 00:04:23,428
Unfortunately for the rabbit,
the cabbages...
49
00:04:23,497 --> 00:04:26,598
Are perfect cover for squeeze.
50
00:04:33,841 --> 00:04:36,108
The rabbit's acute hearing
is legendary.
51
00:04:36,176 --> 00:04:41,146
But it seems oblivious to the
approach of this stealth hunter.
52
00:04:44,451 --> 00:04:50,722
[rabbit breathing]
53
00:04:50,791 --> 00:04:58,664
♪
54
00:05:23,557 --> 00:05:27,359
Rabbits are fast.
Squeeze is faster.
55
00:05:31,298 --> 00:05:38,970
[rabbit screaming]
56
00:05:47,381 --> 00:05:51,183
Slowly, she squeezes.
57
00:05:54,988 --> 00:05:58,724
Every time the rabbit exhales,
the coils tighten
58
00:06:13,740 --> 00:06:16,875
The python can move both
sides of its lower jaw
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00:06:16,943 --> 00:06:23,482
To create a larger entryway, and
in goes the rabbit, headfirst.
60
00:06:43,704 --> 00:06:48,540
[snake breathing]
61
00:06:52,979 --> 00:06:58,283
Strong muscles push the food
down towards her stomach.
62
00:07:15,068 --> 00:07:18,870
♪
63
00:07:18,939 --> 00:07:22,941
When it's all in, time
for a siesta.
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00:07:22,943 --> 00:07:24,643
In a safe place.
65
00:07:27,681 --> 00:07:32,283
It takes a lot of energy to
digest a whole rabbit -
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00:07:32,286 --> 00:07:35,086
She'll be very sluggish
for a few days.
67
00:07:35,088 --> 00:07:40,058
A sluggish snake is a
vulnerable snake.
68
00:07:47,501 --> 00:07:51,503
Pythons have lived in africa
for millions of years,
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00:07:51,505 --> 00:07:54,639
Long before humans arrived
on the scene.
70
00:07:54,708 --> 00:07:57,108
Species come and go,
71
00:07:57,110 --> 00:08:01,513
But the python has a
talent for survival.
72
00:08:01,581 --> 00:08:04,449
The snake we see today
has changed little
73
00:08:04,451 --> 00:08:06,584
From its prehistoric
forebears...
74
00:08:06,587 --> 00:08:10,589
Its among the world's most
primitive snakes.
75
00:08:10,657 --> 00:08:18,063
♪
76
00:08:22,335 --> 00:08:26,404
The small thorn-like projections
on their lower body,
77
00:08:26,406 --> 00:08:30,275
Known as pelvic spurs, are
thought to be vestiges
78
00:08:30,343 --> 00:08:33,478
Of a time when these
animals had hind legs.
79
00:08:35,749 --> 00:08:38,216
A pair of hind legs might
actually come in handy
80
00:08:38,285 --> 00:08:43,221
Right now, as she's weighed down
by the eggs inside her.
81
00:08:45,625 --> 00:08:48,560
They've grown to the point where
it's hard to make much progress.
82
00:08:48,628 --> 00:08:53,565
Each egg weighs about as much
as a billiard ball.
83
00:08:53,633 --> 00:08:55,967
That's around 50 billiard balls
84
00:08:56,036 --> 00:08:59,237
She's been hauling
around for weeks.
85
00:08:59,306 --> 00:09:05,710
[water flows]
86
00:09:07,714 --> 00:09:13,051
[birds chirping]
87
00:09:13,053 --> 00:09:15,053
She's ready to lighten her load,
88
00:09:15,121 --> 00:09:17,789
But she can't just dump
them anywhere.
89
00:09:21,194 --> 00:09:30,835
[leaves crunching]
90
00:09:32,205 --> 00:09:35,407
She's been searching for the
right spot for weeks.
91
00:09:41,148 --> 00:09:44,749
This hollow at the base of
an old silver oak tree
92
00:09:44,818 --> 00:09:47,218
Could provide shelter
from the elements,
93
00:09:47,220 --> 00:09:48,886
Hide her eggs from predators,
94
00:09:48,889 --> 00:09:51,189
And keep them at a constant
temperature.
95
00:10:00,701 --> 00:10:06,838
♪
96
00:10:30,797 --> 00:10:34,866
For an animal capable of such
massive displays of power,
97
00:10:34,868 --> 00:10:38,269
She can be surprisingly
maternal.
98
00:10:38,338 --> 00:10:43,308
She arranges her eggs in a pile
and coils around them tightly.
99
00:11:06,499 --> 00:11:10,435
Of all the snakes in the world,
the african rock python
100
00:11:10,437 --> 00:11:16,174
Is one of only a few that
actually cares for its young.
101
00:11:16,242 --> 00:11:21,246
All the others simply lay or
give birth and leave.
102
00:11:21,314 --> 00:11:22,714
Without her protection,
103
00:11:22,716 --> 00:11:26,451
Squeeze's eggs would be easy
pickings for monitor lizards
104
00:11:26,453 --> 00:11:28,420
And mongooses.
105
00:11:30,857 --> 00:11:33,791
She'll stand guard for
the next 90 days,
106
00:11:33,794 --> 00:11:36,928
Leaving the hollow only
to bask in the sun
107
00:11:36,930 --> 00:11:39,964
And return to warm her eggs
with her re-heated body.
108
00:11:48,008 --> 00:11:50,742
Every day she grows
a little weaker...
109
00:11:50,744 --> 00:11:54,946
And a little less able
to defend herself...
110
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... And her young.
111
00:12:02,489 --> 00:12:04,756
Narrator: Several
months have passed,
112
00:12:04,824 --> 00:12:07,625
During which squeeze's only
job has been guarding
113
00:12:07,627 --> 00:12:09,627
And incubating her young.
114
00:12:15,168 --> 00:12:17,569
She's weak from lack of food,
115
00:12:17,637 --> 00:12:20,071
But her maternal
instinct beckons...
116
00:12:24,778 --> 00:12:28,346
Finally, inside the burrow,
there is a stirring.
117
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♪
118
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[squishing]
119
00:12:53,607 --> 00:12:58,743
A young rock python takes
its first breath.
120
00:13:00,079 --> 00:13:05,950
[squishing]
121
00:13:05,952 --> 00:13:07,952
And then another python.
122
00:13:12,959 --> 00:13:14,959
And another.
123
00:13:21,968 --> 00:13:29,040
One by one, they say hello to
the world outside their shells.
124
00:13:30,043 --> 00:13:38,983
♪
125
00:13:54,668 --> 00:13:58,002
They taste the chemical
cues in the air -
126
00:13:58,004 --> 00:14:04,275
Danger... Food... Mother.
127
00:14:08,281 --> 00:14:11,950
They're not yawning because
they're sleepy.
128
00:14:12,018 --> 00:14:16,420
These yawns are a kind of
snake calisthenics:
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00:14:16,423 --> 00:14:18,890
They align the jaw
in preparation
130
00:14:18,892 --> 00:14:22,460
For swallowing large prey.
131
00:14:39,045 --> 00:14:42,113
For three months, the egg
yolk provided them
132
00:14:42,181 --> 00:14:44,315
With everything they
needed to grow
133
00:14:44,384 --> 00:14:47,151
Supplied by their
umbilical cord.
134
00:14:52,525 --> 00:14:55,593
This life line will be gone in
a matter of hours,
135
00:14:55,662 --> 00:14:58,997
And they will soon be hungry.
136
00:15:02,201 --> 00:15:03,801
At only 20 inches long,
137
00:15:03,803 --> 00:15:07,205
It's hard to imagine them as the
mighty constrictors
138
00:15:07,273 --> 00:15:09,107
Some will become.
139
00:15:11,011 --> 00:15:15,513
But they don't have the luxury
of waiting until they're bigger.
140
00:15:17,016 --> 00:15:20,151
They have just a few weeks,
to leave the nest,
141
00:15:20,153 --> 00:15:25,156
Shed their first skin, and
make their first kill.
142
00:15:43,576 --> 00:15:48,546
Of the 35 eggs squeeze laid,
31 have hatched.
143
00:15:53,186 --> 00:15:56,654
As the roiling mass of newborn
snakes struggles
144
00:15:56,723 --> 00:16:00,525
Toward the exit, the
weakest are crushed
145
00:16:00,593 --> 00:16:02,527
And never make it out
into the world.
146
00:16:02,595 --> 00:16:07,598
Out there the odds of survival
will be even worse.
147
00:16:08,735 --> 00:16:11,336
Some will die of starvation...
148
00:16:11,404 --> 00:16:14,472
And others will survive
just long enough
149
00:16:14,540 --> 00:16:19,143
To become someone else's dinner.
150
00:16:25,618 --> 00:16:31,289
Only a lucky few will make it to
their first birthday.
151
00:16:31,357 --> 00:16:36,461
For now, though, hope
springs eternal.
152
00:16:43,503 --> 00:16:49,474
The young pythons survey the
burrow, searching for a way out.
153
00:17:14,867 --> 00:17:19,837
Finally, one of them makes
a break for it.
154
00:17:38,558 --> 00:17:43,360
Squeeze keeps her hatchlings
close for up to two weeks.
155
00:17:43,363 --> 00:17:45,229
It might not seem very
long to us,
156
00:17:45,298 --> 00:17:50,068
But to these young snakes,
it's a godsend.
157
00:18:06,986 --> 00:18:10,988
Few predators will move on a
hatchling when its watchful,
158
00:18:10,990 --> 00:18:13,624
13 foot mother is coiled nearby.
159
00:18:23,669 --> 00:18:27,605
It's a kind of parental care we
don't associate with snakes,
160
00:18:27,673 --> 00:18:29,807
But the rock python seems to be
161
00:18:29,876 --> 00:18:33,411
An intriguing exception
to the rule.
162
00:18:34,080 --> 00:18:41,352
♪
163
00:18:56,302 --> 00:18:59,170
But even squeeze has her limits:
164
00:18:59,238 --> 00:19:03,241
If she doesn't feed soon,
she could starve.
165
00:19:03,309 --> 00:19:06,777
And when she slithers
off for good,
166
00:19:06,846 --> 00:19:11,749
Her offspring will be on their
own - ready or not.
167
00:19:14,587 --> 00:19:18,356
And the forest is full
of watchful eyes.
168
00:19:23,196 --> 00:19:27,131
Narrator: An adult african rock
python is an apex predator;
169
00:19:27,133 --> 00:19:31,269
It has little to fear from other
animals in the wild.
170
00:19:31,337 --> 00:19:36,874
But the same cannot be said of
hatchling pythons.
171
00:19:36,943 --> 00:19:40,744
They have many enemies,
including venomous snakes -
172
00:19:40,747 --> 00:19:43,280
Like the forest cobra -
173
00:19:43,283 --> 00:19:48,286
And birds of prey - like the
african goshawk.
174
00:19:49,022 --> 00:19:57,828
♪
175
00:20:02,769 --> 00:20:07,238
Their mother can't protect
them forever.
176
00:20:07,306 --> 00:20:11,375
Her maternal instinct has
over-ridden hunger.
177
00:20:11,444 --> 00:20:13,477
She's eaten nothing for months.
178
00:20:15,514 --> 00:20:19,783
Now it's time to say goodbye.
179
00:20:19,786 --> 00:20:22,019
It's time to hunt.
180
00:20:25,524 --> 00:20:29,327
Not so long ago, squeeze broke
out of her eggshell
181
00:20:29,395 --> 00:20:30,728
And emerged from a nest
182
00:20:30,730 --> 00:20:34,899
With many other hatchling rock
pythons, just as her young did.
183
00:20:38,537 --> 00:20:43,874
Most of the others in her clutch
- maybe all - are long dead.
184
00:20:43,876 --> 00:20:46,077
They starved to death before
they could learn
185
00:20:46,145 --> 00:20:48,813
To hunt successfully...
186
00:20:48,881 --> 00:20:53,150
Or they were picked off by
hungry carnivores...
187
00:20:53,152 --> 00:20:55,753
Or they were killed by humans,
188
00:20:55,755 --> 00:20:58,489
Either out of fear
or for profit.
189
00:21:01,827 --> 00:21:04,562
Every year there are fewer
of her kind.
190
00:21:06,832 --> 00:21:10,368
But squeeze crossed the finish
line into adulthood
191
00:21:10,436 --> 00:21:13,237
And is now a formidable and
experienced hunter.
192
00:21:15,308 --> 00:21:20,077
She knows where the food is, and
she knows how to get there.
193
00:21:22,915 --> 00:21:26,050
She laid her eggs deep
in the valley.
194
00:21:26,118 --> 00:21:30,321
Now she's going to have to climb
this steep cliff face.
195
00:21:30,389 --> 00:21:34,191
Not easy for an exhausted
giant constrictor.
196
00:21:34,193 --> 00:21:37,228
But here's how you do it.
197
00:21:38,064 --> 00:21:43,200
♪
198
00:21:46,205 --> 00:21:49,940
First anchor your mid-section
to the rocky surface
199
00:21:49,942 --> 00:21:53,511
Using the scales on
your underbelly.
200
00:21:57,550 --> 00:22:01,352
Then pull your tail all the
way up to the anchor point,
201
00:22:01,354 --> 00:22:07,224
Release the anchor, and use your
tail, to push your way up.
202
00:22:15,034 --> 00:22:18,769
Anchor, pull; anchor, push.
203
00:22:21,040 --> 00:22:23,908
Repeat as needed.
204
00:22:27,980 --> 00:22:32,750
[rocks falling]
205
00:22:37,456 --> 00:22:43,260
It's grueling work, but hunger
is a powerful motivator.
206
00:22:50,069 --> 00:22:57,942
♪
207
00:23:07,086 --> 00:23:11,922
She's not called a rock
python for nothing.
208
00:23:14,827 --> 00:23:20,631
Unfortunately, this is where
things get a bit trickier.
209
00:23:25,304 --> 00:23:28,906
Squeeze is an all-terrain
predator.
210
00:23:28,908 --> 00:23:33,043
She stalks the savannah,
forest and cliffs.
211
00:23:33,112 --> 00:23:38,315
Climbing trees? No problem.
Fording rivers? Piece of cake.
212
00:23:38,317 --> 00:23:41,719
She's bigger, stronger
and faster
213
00:23:41,787 --> 00:23:44,522
Than just about any
other animal here,
214
00:23:44,590 --> 00:23:47,391
So there's no place she can't
hunt with impunity.
215
00:23:47,393 --> 00:23:52,796
No place... Except here.
216
00:23:52,799 --> 00:23:56,200
Here she's encroaching
on the territory
217
00:23:56,268 --> 00:24:00,004
Of another formidable killer.
218
00:24:00,072 --> 00:24:02,206
Some farmers appreciate
the animal
219
00:24:02,208 --> 00:24:04,208
For keeping rats under control.
220
00:24:06,345 --> 00:24:09,079
But many others fear it.
221
00:24:09,081 --> 00:24:11,348
Farmers won't hesitate
to kill one
222
00:24:11,350 --> 00:24:13,751
If they see it as a threat
to their livestock.
223
00:24:16,222 --> 00:24:20,691
[rooster clucks]
224
00:24:20,759 --> 00:24:23,494
Squeeze has to be very
careful here.
225
00:24:23,562 --> 00:24:27,631
She knows there are
humans around.
226
00:24:27,633 --> 00:24:30,367
But she also knows that
where there are humans,
227
00:24:30,436 --> 00:24:33,003
There's usually food.
228
00:24:33,706 --> 00:24:40,144
[chickens clucking]
229
00:24:46,185 --> 00:24:51,188
Visiting this chicken coop is
like shooting fish in a barrel.
230
00:25:02,801 --> 00:25:06,003
The hens know something's
a little off,
231
00:25:06,071 --> 00:25:08,739
But it's not like there's
anywhere for them to go.
232
00:25:12,745 --> 00:25:17,481
It's a calculated risk: Can
squeeze swallow a chicken
233
00:25:17,550 --> 00:25:21,485
And make her escape before
the farmer finds her.
234
00:25:28,160 --> 00:25:30,027
Every minute she's here
235
00:25:30,029 --> 00:25:33,631
Is another chance for
her be discovered.
236
00:25:33,699 --> 00:25:36,166
And if the farmer discovers her,
237
00:25:36,168 --> 00:25:39,236
The same cage that makes the
chickens sitting ducks
238
00:25:39,238 --> 00:25:41,338
Will make her one as well.
239
00:25:45,311 --> 00:25:48,512
Despite the danger, she
moves in slowly.
240
00:25:48,514 --> 00:25:53,284
Methodically. Silently.
241
00:25:54,053 --> 00:25:58,322
♪
242
00:25:59,058 --> 00:26:07,898
[chickens screaming]
243
00:26:10,936 --> 00:26:15,205
The entire strike takes less
time than the blink of an eye.
244
00:26:15,207 --> 00:26:18,342
About 50 milliseconds.
245
00:26:18,344 --> 00:26:20,744
She accelerates toward
her victim
246
00:26:20,746 --> 00:26:24,248
With an impact 30-times the
force of gravity -
247
00:26:25,284 --> 00:26:29,219
If we did that, we'd pass out.
248
00:26:30,222 --> 00:26:34,091
Her curved, razor-sharp teeth
cut through muscle easily
249
00:26:34,093 --> 00:26:39,630
And hold the chicken steady as
she coils around it.
250
00:26:39,632 --> 00:26:44,635
The rest is a foregone
conclusion.
251
00:26:45,704 --> 00:26:52,643
[chickens clucking]
252
00:26:52,711 --> 00:26:57,247
She can feel her prey's
heartbeat, and when it stops,
253
00:26:57,316 --> 00:26:59,483
She knows it's over.
254
00:27:03,522 --> 00:27:07,324
But she doesn't eat
her kill just yet.
255
00:27:07,994 --> 00:27:16,600
After not eating for months, one
chicken just isn't enough.
256
00:27:19,004 --> 00:27:29,012
[chickens screaming]
257
00:27:29,015 --> 00:27:34,485
[chickens screaming]
258
00:27:48,500 --> 00:27:53,003
She listens to make sure
the coast is clear.
259
00:27:54,506 --> 00:27:57,307
Once she starts eating,
260
00:27:57,309 --> 00:27:59,309
She won't be able to make
a quick escape.
261
00:28:05,584 --> 00:28:17,061
[squishing]
262
00:28:17,129 --> 00:28:24,267
[heavy breathing]
263
00:28:24,270 --> 00:28:26,870
You'd think that stuffing her
mouth with a chicken
264
00:28:26,872 --> 00:28:29,473
Would make it impossible
for her to breathe,
265
00:28:29,475 --> 00:28:32,275
But snakes are able to
extend their windpipes
266
00:28:32,278 --> 00:28:35,212
Outside their mouths so
they can breathe
267
00:28:35,280 --> 00:28:37,247
And eat at the same time.
268
00:28:51,230 --> 00:28:57,634
She'll absorb almost every part
of the chicken, even the bones.
269
00:28:57,703 --> 00:28:59,503
The feathers will pass
through her system
270
00:28:59,505 --> 00:29:00,904
And come out in her feces.
271
00:29:00,906 --> 00:29:05,909
Not much nutrition in feathers.
272
00:29:07,113 --> 00:29:12,315
[birds chirping]
273
00:29:12,318 --> 00:29:16,587
Squeeze has had a good
few months.
274
00:29:16,655 --> 00:29:19,256
She's laid her eggs and
guarded her offspring
275
00:29:19,324 --> 00:29:20,791
Until they hatched.
276
00:29:20,793 --> 00:29:23,594
She's managed to slip
into a busy farm,
277
00:29:23,662 --> 00:29:27,864
Eat two chickens, and
slip out unnoticed.
278
00:29:27,867 --> 00:29:30,367
Not so easy for a
predator her size.
279
00:29:41,413 --> 00:29:46,550
Now she's looking for a safe
place to digest her meal.
280
00:29:46,618 --> 00:29:50,487
But in this valley, safe
is a relative term.
281
00:29:51,023 --> 00:29:55,025
♪
282
00:29:55,027 --> 00:29:58,462
Squeeze's young are
now a month old.
283
00:30:00,699 --> 00:30:02,232
Over the last few weeks
284
00:30:02,301 --> 00:30:07,271
Many of them have gotten
picked off by predators.
285
00:30:10,309 --> 00:30:13,643
These are the survivors.
286
00:30:13,646 --> 00:30:17,181
Now, it's make or break.
287
00:30:18,050 --> 00:30:25,722
[birds chirping]
288
00:30:36,669 --> 00:30:38,068
They have a few years to go
289
00:30:38,070 --> 00:30:41,671
Before they are big and strong
like their mother.
290
00:30:41,674 --> 00:30:46,677
Until then, they're on
everyone's menu...
291
00:30:48,681 --> 00:30:53,684
And some of their bigger cousins
aren't above cannibalism.
292
00:30:57,489 --> 00:31:00,557
Narrator: As the young
pythons' senses sharpen,
293
00:31:00,559 --> 00:31:03,226
They're learning how
to use them...
294
00:31:03,229 --> 00:31:07,598
Not just for hunting...
But for survival.
295
00:31:13,438 --> 00:31:16,573
This is the forest cobra.
296
00:31:16,642 --> 00:31:21,478
The largest and one of the most
deadly cobra's in africa.
297
00:31:25,183 --> 00:31:30,087
It may be a distant relative,
but it's got to eat too.
298
00:31:37,062 --> 00:31:44,201
The question is: Does this young
python know the danger it's in?
299
00:31:44,269 --> 00:31:46,036
Apparently so.
300
00:31:55,080 --> 00:32:00,550
The cobra won't be easily fooled
- this isn't its first rodeo.
301
00:32:00,552 --> 00:32:06,556
One whiff of baby python
and the jig is up.
302
00:32:18,837 --> 00:32:23,239
Looks like the young python
dodged a bullet.
303
00:32:23,242 --> 00:32:25,542
Now back to the hunt.
304
00:32:30,115 --> 00:32:33,517
Success will depend on doing
a few things right.
305
00:32:33,585 --> 00:32:39,089
First find prey of an
appropriate size.
306
00:32:41,793 --> 00:32:47,397
[sniffing]
307
00:32:49,068 --> 00:32:56,306
Then, approach patiently and
in complete silence.
308
00:33:09,021 --> 00:33:11,288
[sniffing]
309
00:33:11,556 --> 00:33:18,695
♪
310
00:33:18,764 --> 00:33:21,598
[squeeling]
311
00:33:27,306 --> 00:33:31,575
The strike was perfectly timed
and right on target.
312
00:33:31,643 --> 00:33:38,048
Just one small problem.
A dental problem.
313
00:33:38,050 --> 00:33:42,853
[squeeling]
314
00:33:42,921 --> 00:33:45,121
The young snake's teeth,
315
00:33:45,124 --> 00:33:48,725
Designed to hook onto prey and
prevent it from escaping...
316
00:33:48,794 --> 00:33:51,261
Are still too puny to
get the job done.
317
00:33:53,866 --> 00:33:56,666
[squeeling]
318
00:33:56,668 --> 00:34:00,203
[breathing]
319
00:34:15,087 --> 00:34:17,087
Better luck next time.
320
00:34:19,224 --> 00:34:24,995
Meanwhile, not far away, one of
his brothers is trying his luck.
321
00:34:28,834 --> 00:34:31,968
[sniffing]
322
00:34:32,037 --> 00:34:37,240
He tastes the air for the
mouse's location.
323
00:34:38,043 --> 00:34:48,051
♪
324
00:34:48,120 --> 00:34:59,796
♪
325
00:34:59,865 --> 00:35:06,203
[squeeling]
326
00:35:06,271 --> 00:35:16,279
[rustling]
327
00:35:16,281 --> 00:35:18,482
The mouse is held fast.
328
00:35:18,550 --> 00:35:23,520
Let the coiling begin.
329
00:35:37,102 --> 00:35:39,469
It's a big step for this
young rock python.
330
00:35:42,908 --> 00:35:47,477
All it means, though, is that
he'll survive a little longer.
331
00:36:01,527 --> 00:36:04,127
He'll need many more
meals like this,
332
00:36:04,129 --> 00:36:08,064
Before he grows to be a
giant like his mother.
333
00:36:13,605 --> 00:36:17,607
Squeeze is recovering
from her long fast.
334
00:36:17,676 --> 00:36:22,412
Rock pythons can go for long
periods without eating,
335
00:36:22,480 --> 00:36:25,748
Which is one reason why they've
been around for so long.
336
00:36:25,751 --> 00:36:30,353
But they also know they need to
make hay while the sun shines.
337
00:36:32,758 --> 00:36:35,358
It's autumn.
338
00:36:35,360 --> 00:36:40,630
And as far as squeeze is
concerned, the sun is shining.
339
00:36:40,699 --> 00:36:43,967
Many of the valley's animals
have given birth -
340
00:36:43,969 --> 00:36:47,103
Including the impala.
341
00:36:47,639 --> 00:36:49,940
The grassland has become
a nursery.
342
00:36:53,378 --> 00:36:57,113
These young calves weigh
about 45 pounds,
343
00:36:57,182 --> 00:37:00,450
And they don't know enough
to be afraid.
344
00:37:00,452 --> 00:37:03,353
Which they should be.
345
00:37:08,727 --> 00:37:14,397
For squeeze an impala calf would
be a perfect meal -
346
00:37:14,399 --> 00:37:17,467
Heftier than the chickens and
rabbits she's been subsisting on
347
00:37:17,469 --> 00:37:20,637
- And without the risks
of the farm.
348
00:37:23,675 --> 00:37:28,478
If she bags one, she won't need
to hunt again for months.
349
00:37:28,546 --> 00:37:32,816
But adult impala are skittish
350
00:37:32,884 --> 00:37:37,153
And have extremely
sensitive hearing.
351
00:37:37,155 --> 00:37:44,227
One wrong slither and the herd
could easily bolt.
352
00:37:45,964 --> 00:37:49,032
Narrator: The silent hunter...
353
00:37:49,100 --> 00:37:53,703
And a species perfectly adapted
to the art of escape.
354
00:37:56,441 --> 00:38:00,510
The impala combines incredible
agility and leaping power
355
00:38:00,578 --> 00:38:05,548
With a sense of hearing attuned
to the slightest sound.
356
00:38:11,189 --> 00:38:14,391
Squeeze can smell to some extent
through her nostrils,
357
00:38:14,459 --> 00:38:19,429
But her most powerful sensory
tool is her forked tongue.
358
00:38:25,136 --> 00:38:27,470
The tongue is split in two,
359
00:38:27,472 --> 00:38:31,541
Each side called a tine is
connected to its own organ
360
00:38:31,543 --> 00:38:33,943
In the roof of her mouth.
361
00:38:33,945 --> 00:38:38,415
When it flicks out, the tines
separate as much as possible,
362
00:38:38,483 --> 00:38:41,484
So that each one sends slightly
different information
363
00:38:41,553 --> 00:38:43,753
To its respective organ.
364
00:38:43,755 --> 00:38:45,621
Her brain then interprets
these signals
365
00:38:45,624 --> 00:38:47,490
As a “stereo” image of
what's out there,
366
00:38:47,492 --> 00:38:50,026
Which lets her track
the distance
367
00:38:50,095 --> 00:38:52,062
And direction of her prey.
368
00:38:57,703 --> 00:39:06,943
♪
369
00:39:21,193 --> 00:39:26,196
Stealth, not speed, will get her
close enough to strike.
370
00:39:28,066 --> 00:39:32,068
It's the only way to avoid
tripping the alarm.
371
00:39:47,953 --> 00:39:52,288
[rustling]
372
00:40:10,508 --> 00:40:20,717
♪
373
00:40:20,785 --> 00:40:26,756
[grunting]
374
00:40:31,463 --> 00:40:34,531
The struggle lasts only
a few minutes,
375
00:40:35,400 --> 00:40:49,446
[squeezing]
376
00:40:58,023 --> 00:41:02,091
Our eyes may sometimes be bigger
than our stomachs,
377
00:41:02,160 --> 00:41:05,862
But that's really not a problem
for an african rock python.
378
00:41:09,100 --> 00:41:11,034
Her lower jaw splits in two,
379
00:41:11,102 --> 00:41:13,803
Allowing her to stretch
around the impala.
380
00:41:20,912 --> 00:41:24,046
Squeeze's skin is so elastic
it can stretch
381
00:41:24,049 --> 00:41:26,583
To more than five times her
normal girth.
382
00:41:33,525 --> 00:41:35,791
As amazing as this is,
383
00:41:35,794 --> 00:41:40,597
Swallowing prey this size
is a huge risk.
384
00:41:40,665 --> 00:41:43,600
It will take her 45
minutes to do it —
385
00:41:43,668 --> 00:41:48,104
45 minutes in which she couldn't
move if her life depended on it.
386
00:41:49,073 --> 00:41:59,349
[squeezing]
387
00:42:07,425 --> 00:42:10,026
To speed things up, her
metabolism climbs
388
00:42:10,094 --> 00:42:15,098
To 44 times its normal rate and
her heart gets 40% larger -
389
00:42:15,166 --> 00:42:18,034
So it can pump blood faster to
her digestive system.
390
00:42:19,037 --> 00:42:28,011
[birds chirping]
391
00:42:32,784 --> 00:42:41,524
[breathing]
392
00:42:41,526 --> 00:42:43,793
At last.
393
00:42:43,795 --> 00:42:48,031
45 pounds of pure protein,
in one sitting.
394
00:43:01,947 --> 00:43:03,947
It's a miracle she
can move at all.
395
00:43:08,353 --> 00:43:11,621
Now squeeze's body can spring
back into shape.
396
00:43:14,960 --> 00:43:17,060
She clicks her jaw back
into position.
397
00:43:31,442 --> 00:43:35,978
This meal will take her up to
two weeks to fully digest.
398
00:43:35,981 --> 00:43:41,384
But once she does, squeeze won't
need to hunt again for months.
399
00:43:41,386 --> 00:43:44,587
It will bump up her chances of
survival for the year to come,
400
00:43:44,589 --> 00:43:47,323
And ensure she's in
peak condition
401
00:43:47,325 --> 00:43:50,526
For the rapidly approaching
breeding season.
402
00:43:50,595 --> 00:43:53,396
When it all begins again.
403
00:43:53,398 --> 00:43:56,032
♪
29532
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