1 00:00:08,299 --> 00:00:09,551 BENEDICT: Enter a world 2 00:00:11,136 --> 00:00:13,138 just beyond your perception. 3 00:00:19,019 --> 00:00:22,272 A world of extraordinary animals... 4 00:00:23,231 --> 00:00:24,566 with hidden powers 5 00:00:25,233 --> 00:00:26,526 and super senses. 6 00:00:27,694 --> 00:00:29,863 If you think you know nature... 7 00:00:32,657 --> 00:00:33,658 think again. 8 00:00:45,378 --> 00:00:46,880 In a competitive world, 9 00:00:48,089 --> 00:00:49,299 it can be very hard... 10 00:00:50,133 --> 00:00:51,509 to tell friend 11 00:00:52,010 --> 00:00:53,303 from foe. 12 00:00:55,805 --> 00:00:57,265 The Kalahari Desert. 13 00:00:58,892 --> 00:01:00,393 Here, the harsh sun 14 00:01:00,852 --> 00:01:03,688 forces some of the juiciest and toughest critters 15 00:01:05,231 --> 00:01:06,858 to hide underground. 16 00:01:10,653 --> 00:01:14,949 Only the most super-skilled hunters can get at them. 17 00:01:21,456 --> 00:01:25,460 Meerkats can sniff out the best prey beneath the surface. 18 00:01:35,804 --> 00:01:38,056 But when your head's buried in the sand, 19 00:01:39,557 --> 00:01:41,810 digging eight hours a day... 20 00:01:47,190 --> 00:01:49,067 it pays to have friends... 21 00:01:49,275 --> 00:01:50,401 (BIRD CALLS) 22 00:01:50,568 --> 00:01:51,820 BENEDICT: ...in high places. 23 00:01:57,909 --> 00:02:00,161 A drongo's razor-sharp vision 24 00:02:00,870 --> 00:02:02,622 can pinpoint a tiny bug 25 00:02:03,456 --> 00:02:05,333 over 300 feet away. 26 00:02:07,085 --> 00:02:08,503 And from way up here, 27 00:02:09,087 --> 00:02:11,965 it can spot an enemy a mile off. 28 00:02:12,298 --> 00:02:13,800 (EAGLE CALLING) 29 00:02:20,807 --> 00:02:23,768 BENEDICT: Like a 14-pound meerkat-eating, 30 00:02:23,977 --> 00:02:25,061 martial eagle. 31 00:02:26,354 --> 00:02:27,438 (CHIRPS) 32 00:02:27,605 --> 00:02:29,023 BENEDICT: Meerkats understand 33 00:02:29,107 --> 00:02:30,650 that's drongo for... 34 00:02:30,817 --> 00:02:31,818 (CHIRPS) 35 00:02:32,527 --> 00:02:34,070 BENEDICT: ..."threat from the skies". 36 00:02:35,321 --> 00:02:37,574 (MEERKATS SQUEALING) 37 00:02:45,081 --> 00:02:47,083 (MEERKATS SQUEALING) 38 00:02:49,127 --> 00:02:51,629 -(BIRD CALLING) -(MEERKATS CHATTERING) 39 00:02:53,381 --> 00:02:54,674 BENEDICT: When their trusted friend... 40 00:02:54,841 --> 00:02:56,009 (WHISTLES) 41 00:02:56,092 --> 00:02:57,385 BENEDICT: ...gives the all-clear, 42 00:02:58,261 --> 00:03:00,722 the meerkats know it's safe to come out again. 43 00:03:02,724 --> 00:03:06,227 (MEERKATS CHATTERING) 44 00:03:15,028 --> 00:03:16,863 BENEDICT: And they get back to work. 45 00:03:19,490 --> 00:03:20,909 (SQUEALS) 46 00:03:25,205 --> 00:03:26,581 BENEDICT: Jackpot. 47 00:03:26,706 --> 00:03:28,124 Protein and water 48 00:03:28,416 --> 00:03:30,543 in one poisonous package. 49 00:03:39,928 --> 00:03:41,763 Thankfully meerkats are experts... 50 00:03:41,888 --> 00:03:43,890 -(MEERKAT CHATTERS) -BENEDICT: ...at dispatching scorpions. 51 00:03:46,893 --> 00:03:48,269 But this story 52 00:03:48,519 --> 00:03:49,979 has another sting in the tail. 53 00:03:52,357 --> 00:03:53,524 (SHARP BIRD CALLS) 54 00:03:53,691 --> 00:03:55,068 BENEDICT: That's the alarm again. 55 00:03:55,318 --> 00:03:57,028 -(SHARP BIRD CALLS) -(MEERKATS CHATTERING) 56 00:04:03,660 --> 00:04:04,911 BENEDICT: But this time... 57 00:04:06,788 --> 00:04:08,957 there is no eagle. 58 00:04:09,457 --> 00:04:10,500 (WHISTLES) 59 00:04:17,215 --> 00:04:18,466 BENEDICT: The drongo 60 00:04:19,217 --> 00:04:20,385 is a liar, 61 00:04:21,344 --> 00:04:22,887 a cunning con artist, 62 00:04:23,429 --> 00:04:24,514 who takes advantage 63 00:04:24,722 --> 00:04:26,224 of the meerkat's hard work 64 00:04:26,808 --> 00:04:28,935 to steal a free lunch. 65 00:04:31,437 --> 00:04:33,648 But cry eagle too many times... 66 00:04:34,774 --> 00:04:36,317 (BIRD CALLS) 67 00:04:36,693 --> 00:04:37,944 (MEERKAT PURRING) 68 00:04:44,826 --> 00:04:47,161 BENEDICT: ...and the meerkats get wise to the game. 69 00:04:48,746 --> 00:04:49,914 (WHISTLES) 70 00:05:00,383 --> 00:05:02,969 BENEDICT: Now, that call can't be ignored. 71 00:05:03,469 --> 00:05:04,595 (BIRD CALLS) 72 00:05:04,804 --> 00:05:05,888 BENEDICT: It's a meerkat alarm. 73 00:05:09,684 --> 00:05:11,060 (MEERKATS SQUEALING) 74 00:05:18,401 --> 00:05:19,444 BENEDICT: Or is it? 75 00:05:23,406 --> 00:05:25,491 -(BIRD CHITTERS) -BENEDICT: The devious drongo... 76 00:05:30,163 --> 00:05:33,041 is also a mind-blowing mimic. 77 00:05:36,627 --> 00:05:37,837 She can switch 78 00:05:38,004 --> 00:05:40,340 between 30 different alarm imitations. 79 00:05:43,301 --> 00:05:45,386 And as long as she tells the truth, 80 00:05:45,511 --> 00:05:46,554 sometimes, 81 00:05:46,679 --> 00:05:50,308 meerkats can't afford to ignore their two-faced frenemy. 82 00:05:50,516 --> 00:05:51,893 (SQUEAKY BIRD CALLS) 83 00:05:53,436 --> 00:05:57,065 BENEDICT: Animals use extraordinary powers to outsmart the competition. 84 00:05:59,442 --> 00:06:01,319 But often, the greatest enemy 85 00:06:02,362 --> 00:06:04,405 is the one you least expect. 86 00:06:04,822 --> 00:06:06,282 (MEERKATS CHATTERING) 87 00:06:11,120 --> 00:06:13,998 (THEME MUSIC PLAYING) 88 00:06:17,335 --> 00:06:18,836 (BIRDS CHIRPING) 89 00:06:21,631 --> 00:06:24,592 BENEDICT: In nature, conflict is everywhere. 90 00:06:27,804 --> 00:06:30,807 An Austrian park may seem peaceful enough, 91 00:06:33,476 --> 00:06:34,685 but there's an animal here 92 00:06:34,769 --> 00:06:37,271 who knows how to stir up the competition, 93 00:06:38,648 --> 00:06:41,109 and turn it to her advantage. 94 00:06:44,654 --> 00:06:47,657 This female European hamster 95 00:06:47,865 --> 00:06:50,410 is looking for the fittest mate possible. 96 00:06:54,414 --> 00:06:57,500 A dozen normally solitary males live here. 97 00:07:04,132 --> 00:07:06,509 But rather than waste time checking them out, 98 00:07:07,385 --> 00:07:09,470 she arranges a little contest. 99 00:07:11,139 --> 00:07:12,515 (SQUEALS) 100 00:07:12,723 --> 00:07:17,437 BENEDICT: Her siren song has a powerful ultrasonic pitch. 101 00:07:17,854 --> 00:07:20,481 It's been slowed down so we can hear it. 102 00:07:22,900 --> 00:07:24,902 But any male within 60 feet 103 00:07:25,361 --> 00:07:27,738 receives her call loud and clear. 104 00:07:28,448 --> 00:07:29,740 (FEMALE HAMSTER SQUEALS) 105 00:07:31,451 --> 00:07:32,785 BENEDICT: The race is on. 106 00:07:34,954 --> 00:07:38,791 (SQUEALS) 107 00:07:46,257 --> 00:07:47,967 BENEDICT: Being quick to respond 108 00:07:48,176 --> 00:07:49,343 is a good sign. 109 00:07:50,511 --> 00:07:53,306 But how to choose between the two front runners. 110 00:07:58,311 --> 00:08:00,271 She releases a signature scent, 111 00:08:03,691 --> 00:08:05,318 a potent aphrodisiac. 112 00:08:10,072 --> 00:08:11,365 Just the slightest whiff 113 00:08:11,574 --> 00:08:15,495 sends a rush of adrenaline coursing through the male's blood. 114 00:08:17,038 --> 00:08:19,707 Testosterone levels can increase tenfold... 115 00:08:23,336 --> 00:08:24,504 turning these fluffy rodents 116 00:08:25,213 --> 00:08:28,382 into one-pound balls of teeth and fury. 117 00:08:35,306 --> 00:08:37,058 Fights can turn deadly. 118 00:08:43,564 --> 00:08:45,441 And all the female has to do... 119 00:08:46,150 --> 00:08:47,944 is let the competition play out. 120 00:09:19,308 --> 00:09:20,476 Rival chased off, 121 00:09:24,021 --> 00:09:27,233 the victor makes himself presentable, 122 00:09:30,570 --> 00:09:31,988 then he's ready 123 00:09:32,196 --> 00:09:33,531 to meet his mate. 124 00:09:37,243 --> 00:09:39,870 But it's the female who's the real winner. 125 00:09:42,832 --> 00:09:44,750 Making males fight over her 126 00:09:45,876 --> 00:09:48,713 to secure the perfect partner. 127 00:10:03,394 --> 00:10:06,147 Standing up to your rivals risks a fight. 128 00:10:08,983 --> 00:10:13,779 So, some creatures go to amazing lengths to avoid coming to blows. 129 00:10:15,364 --> 00:10:17,867 In California's giant kelp forests, 130 00:10:18,618 --> 00:10:20,286 there's a hand-sized fish 131 00:10:20,536 --> 00:10:22,788 called a Sarcastic Fringehead. 132 00:10:26,834 --> 00:10:28,961 Its bizarre bulging eyes 133 00:10:29,712 --> 00:10:32,381 give a panoramic view of dangers all around. 134 00:10:41,641 --> 00:10:44,810 Many predators would happily snap up a little fish like this, 135 00:10:48,189 --> 00:10:50,066 so he needs somewhere to hide. 136 00:10:52,234 --> 00:10:53,653 A snail shell... 137 00:10:54,487 --> 00:10:55,821 is the perfect place. 138 00:11:10,503 --> 00:11:11,545 But... 139 00:11:11,837 --> 00:11:13,714 it's already occupied 140 00:11:14,757 --> 00:11:16,676 by a two-spot octopus. 141 00:11:24,433 --> 00:11:26,477 Hiding places are in such demand, 142 00:11:27,269 --> 00:11:28,854 they have to be fought for. 143 00:11:29,897 --> 00:11:32,274 But better to pick on someone his own size. 144 00:11:36,779 --> 00:11:38,322 Another Fringehead. 145 00:11:40,616 --> 00:11:42,076 To avoid injury, 146 00:11:42,284 --> 00:11:45,121 these fish have an extraordinary way 147 00:11:45,287 --> 00:11:46,664 to face each other down. 148 00:11:56,132 --> 00:12:00,594 Their mouths can expand three times wider than their bodies. 149 00:12:05,141 --> 00:12:07,977 And there's even more to this jaw-dropping display. 150 00:12:10,896 --> 00:12:12,148 Invisible to us, 151 00:12:13,065 --> 00:12:15,234 their gape is enhanced 152 00:12:15,776 --> 00:12:18,446 with a striking ultraviolet warning. 153 00:12:21,031 --> 00:12:23,159 It's a secret signal of strength, 154 00:12:24,326 --> 00:12:27,204 thought to help Fringeheads judge who is more powerful 155 00:12:28,414 --> 00:12:30,249 before the battle goes too far. 156 00:12:46,640 --> 00:12:47,683 Evicted, 157 00:12:48,058 --> 00:12:49,643 but at least unharmed. 158 00:12:50,686 --> 00:12:52,396 Now he's the one exposed. 159 00:12:54,565 --> 00:12:57,777 While the intruder takes shelter from the outside world. 160 00:13:05,826 --> 00:13:07,661 Nature may appear abundant, 161 00:13:08,746 --> 00:13:10,623 but whether in ocean 162 00:13:10,915 --> 00:13:12,082 or on land, 163 00:13:14,502 --> 00:13:17,838 space and food have to be fought for. 164 00:13:21,926 --> 00:13:23,886 In Botswana's Okavango Delta, 165 00:13:25,137 --> 00:13:27,598 fierce competition pits carnivore... 166 00:13:29,642 --> 00:13:30,851 against carnivore. 167 00:13:31,393 --> 00:13:34,271 (WHINING AND GRUNTING) 168 00:13:39,652 --> 00:13:43,697 BENEDICT: A lone hyena up against the power of a wild dog pack. 169 00:13:45,241 --> 00:13:46,575 She split from her clan 170 00:13:46,700 --> 00:13:48,953 to cover more ground in the search for food. 171 00:13:50,162 --> 00:13:52,456 Now it seems a risky strategy. 172 00:13:52,748 --> 00:13:53,999 (HYENA CACKLING) 173 00:13:54,792 --> 00:13:57,002 BENEDICT: But with an incredible immune system, 174 00:13:58,295 --> 00:14:00,756 and almost supernatural survival skills, 175 00:14:02,842 --> 00:14:04,677 she's far from the underdog. 176 00:14:09,640 --> 00:14:13,185 Her phenomenal sense of smell can detect opportunity 177 00:14:13,894 --> 00:14:15,646 two miles away. 178 00:14:19,108 --> 00:14:20,818 (PUFFING AND GRUNTING) 179 00:14:22,111 --> 00:14:23,612 BENEDICT: Nearly six-feet-tall, 180 00:14:24,280 --> 00:14:25,739 fifteen-hundred pounds, 181 00:14:26,574 --> 00:14:27,908 one Cape buffalo 182 00:14:28,117 --> 00:14:31,120 would feed her entire clan for a week. 183 00:14:33,747 --> 00:14:35,583 (GRUNTING) 184 00:14:43,173 --> 00:14:45,134 BENEDICT: She can't take on a buffalo alone. 185 00:14:46,552 --> 00:14:48,053 (PUFFING) 186 00:14:48,637 --> 00:14:50,973 BENEDICT: But with primate-level intelligence, 187 00:14:51,724 --> 00:14:54,435 she can take a more strategic approach. 188 00:14:54,643 --> 00:14:55,853 (PUFFING) 189 00:14:57,938 --> 00:15:00,274 BENEDICT: Let her rivals control the game. 190 00:15:00,482 --> 00:15:01,650 (LOW GROWLING) 191 00:15:06,322 --> 00:15:07,823 BENEDICT: Up to twice her size, 192 00:15:10,576 --> 00:15:11,911 four times her weight, 193 00:15:13,495 --> 00:15:17,207 lions are a hyena's greatest enemy. 194 00:15:21,754 --> 00:15:23,088 Hunting as a pride, 195 00:15:23,589 --> 00:15:25,424 they're even more powerful. 196 00:15:28,969 --> 00:15:30,137 (PUFFING) 197 00:15:37,269 --> 00:15:39,229 BENEDICT: But when buffalo move as a battalion 198 00:15:39,980 --> 00:15:41,857 up to 600 strong, 199 00:15:46,612 --> 00:15:48,572 even the most heavily armed hunters 200 00:15:49,740 --> 00:15:50,783 can't engage. 201 00:15:51,492 --> 00:15:53,160 (LION SNARLING) 202 00:16:04,713 --> 00:16:06,131 BENEDICT: The smartest predator... 203 00:16:07,841 --> 00:16:09,134 bides its time. 204 00:16:14,932 --> 00:16:16,308 And as night approaches... 205 00:16:16,725 --> 00:16:18,185 (CHITTERING) 206 00:16:18,519 --> 00:16:19,895 BENEDICT: ...the tables turn. 207 00:16:26,902 --> 00:16:28,028 (BIRD HOOTS) 208 00:16:29,071 --> 00:16:31,740 BENEDICT: Lions have a reflective backing in their eyes, 209 00:16:31,907 --> 00:16:35,369 which gives them night vision six times stronger than our own, 210 00:16:37,413 --> 00:16:40,040 revealing a world we only see 211 00:16:41,500 --> 00:16:43,335 with super-sensitive cameras. 212 00:16:46,755 --> 00:16:47,965 In the cool night, 213 00:16:48,215 --> 00:16:50,676 hunters become more active. 214 00:16:53,804 --> 00:16:55,597 And use the darkness 215 00:16:55,764 --> 00:16:57,182 to conceal their attack. 216 00:16:58,350 --> 00:16:59,685 (GRUNTING) 217 00:17:02,688 --> 00:17:04,940 BENEDICT: Hyenas have excellent night vision, too. 218 00:17:08,736 --> 00:17:12,990 All the better to watch as the lions do the hard work. 219 00:17:14,533 --> 00:17:15,868 (LION GROWLING) 220 00:17:23,667 --> 00:17:24,960 (LIONS GROWLING) 221 00:17:28,422 --> 00:17:29,506 BENEDICT: Now... 222 00:17:30,549 --> 00:17:32,968 time to execute her plan. 223 00:17:35,220 --> 00:17:36,722 (HOWLING) 224 00:17:37,681 --> 00:17:40,184 BENEDICT: Bouncing her battle cry into the ground 225 00:17:41,060 --> 00:17:42,686 amplifies the sound. 226 00:17:50,486 --> 00:17:52,112 So, it reaches super-sensitive ears 227 00:17:52,946 --> 00:17:54,698 up to six miles away... 228 00:17:56,950 --> 00:17:58,869 (HOWLING AND LAUGHING) 229 00:18:01,580 --> 00:18:03,749 BENEDICT: ...and mobilizes her scattered clan. 230 00:18:11,924 --> 00:18:13,300 (LION GROWLS) 231 00:18:13,467 --> 00:18:14,593 BENEDICT: Waiting for backup, 232 00:18:15,177 --> 00:18:16,637 she plays for time. 233 00:18:21,850 --> 00:18:25,312 Harassing the lions distracts them, and slows their feeding. 234 00:18:27,439 --> 00:18:28,774 (LION GROWLS) 235 00:18:30,567 --> 00:18:31,735 (HYENA YIPS) 236 00:18:32,444 --> 00:18:34,696 -BENEDICT: But she must be careful. -(HYENA LAUGHING) 237 00:18:35,906 --> 00:18:38,534 BENEDICT: One swipe of a lion paw can kill. 238 00:18:40,244 --> 00:18:42,788 Alone, she's on the defensive. 239 00:18:42,871 --> 00:18:44,123 (HYENA WHINING) 240 00:18:48,544 --> 00:18:50,921 BENEDICT: But with 20 of her clan behind her, 241 00:18:52,756 --> 00:18:54,550 it's time to make her move. 242 00:18:55,384 --> 00:18:56,635 (HYENAS LAUGHING) 243 00:18:59,805 --> 00:19:03,684 BENEDICT: Hyenas are even more effective team players than lions. 244 00:19:06,228 --> 00:19:07,354 (LION GROWLING) 245 00:19:17,656 --> 00:19:18,699 BENEDICT: Working together, 246 00:19:21,535 --> 00:19:23,579 the clan exhausts the pride. 247 00:19:26,999 --> 00:19:29,084 Lions know when they're beaten. 248 00:19:36,049 --> 00:19:37,634 -(HYENAS LAUGHING) -(CRUNCHING NOISE) 249 00:19:42,014 --> 00:19:43,974 BENEDICT: With jaws that crush bones, 250 00:19:46,602 --> 00:19:48,896 and stomachs strong enough to digest them, 251 00:19:50,022 --> 00:19:51,523 in just a few hours, 252 00:19:51,982 --> 00:19:54,860 any trace of the buffalo will be gone. 253 00:20:02,784 --> 00:20:05,829 Bellies full, the whole clan back together. 254 00:20:10,167 --> 00:20:11,543 For today at least, 255 00:20:12,252 --> 00:20:14,671 the hyenas hold the power 256 00:20:15,547 --> 00:20:17,674 in the age-old carnivore war. 257 00:20:23,639 --> 00:20:27,684 Another animal rivalry has played out over millions of years. 258 00:20:29,728 --> 00:20:32,272 Time enough to evolve a secret weapon 259 00:20:32,606 --> 00:20:35,192 to ward off a far more powerful enemy. 260 00:20:38,445 --> 00:20:40,572 A giant Asian hornet, 261 00:20:41,698 --> 00:20:43,533 the largest wasp in the world. 262 00:20:45,327 --> 00:20:46,536 Two inches long, 263 00:20:47,120 --> 00:20:48,789 and highly carnivorous. 264 00:20:50,999 --> 00:20:52,292 (BUZZING) 265 00:20:55,712 --> 00:20:57,047 BENEDICT: Four times smaller 266 00:20:57,172 --> 00:20:59,174 -Japanese Honeybees... -(BUZZING) 267 00:20:59,424 --> 00:21:01,051 ...seem almost defenseless 268 00:21:02,302 --> 00:21:04,096 against a heavily-armed hornet. 269 00:21:07,432 --> 00:21:08,976 With a quarter-inch stinger, 270 00:21:09,685 --> 00:21:11,728 and outsized mandibles, 271 00:21:13,522 --> 00:21:16,733 she can kill 40 bees in a minute. 272 00:21:18,026 --> 00:21:19,152 (BEE SQUEALS) 273 00:21:22,072 --> 00:21:24,283 BENEDICT: But it's not the bees she's after. 274 00:21:28,662 --> 00:21:30,205 (BUZZING) 275 00:21:32,374 --> 00:21:33,625 BENEDICT: It's their babies. 276 00:21:38,588 --> 00:21:40,048 Hidden inside this tree, 277 00:21:40,924 --> 00:21:42,634 are thousands of larvae, 278 00:21:46,179 --> 00:21:49,474 protected by 20,000 dedicated workers. 279 00:21:58,191 --> 00:22:01,695 It's too much for one hornet to take on alone. 280 00:22:03,238 --> 00:22:05,282 So, she marks the bee's fortress 281 00:22:06,575 --> 00:22:07,868 with a chemical beacon. 282 00:22:12,998 --> 00:22:14,499 Hornets cover 60 miles a day 283 00:22:14,624 --> 00:22:15,959 looking for food. 284 00:22:17,085 --> 00:22:19,504 As soon as her kin sends the signal... 285 00:22:19,755 --> 00:22:20,964 (LOUD BUZZING) 286 00:22:21,089 --> 00:22:22,591 BENEDICT: ...they know their search is over. 287 00:22:29,931 --> 00:22:31,308 In just hours, 288 00:22:32,059 --> 00:22:34,353 a gang of these deadly assassins 289 00:22:34,519 --> 00:22:36,438 could annihilate the whole hive. 290 00:22:47,783 --> 00:22:49,451 Outer defenses breached. 291 00:22:50,994 --> 00:22:51,995 Next... 292 00:22:54,414 --> 00:22:55,499 the nursery. 293 00:22:56,166 --> 00:22:57,793 (BUZZING) 294 00:22:58,627 --> 00:23:00,879 BENEDICT: The fate of the colony is sealed... 295 00:23:03,465 --> 00:23:04,466 Almost. 296 00:23:05,008 --> 00:23:08,095 The bees have one last chance at survival. 297 00:23:11,181 --> 00:23:13,850 A chemical alarm compels them to move as one, 298 00:23:15,560 --> 00:23:17,062 and swarm the hornets. 299 00:23:25,570 --> 00:23:28,448 Then each bee begins flexing its flight muscles. 300 00:23:29,991 --> 00:23:32,452 It only produces a tiny amount of heat, 301 00:23:33,912 --> 00:23:35,080 but when combined, 302 00:23:35,956 --> 00:23:37,791 it becomes a formidable force. 303 00:23:40,001 --> 00:23:43,046 Thermal cameras reveal the core temperature is rising. 304 00:23:45,215 --> 00:23:46,800 This glowing bee ball 305 00:23:47,592 --> 00:23:48,969 is a precision weapon. 306 00:23:50,303 --> 00:23:52,806 Just one degree higher would kill the bees. 307 00:23:54,933 --> 00:23:58,019 But exactly 117 degrees Fahrenheit 308 00:23:59,312 --> 00:24:00,730 is the perfect temperature 309 00:24:01,523 --> 00:24:04,109 to cook hornets alive. 310 00:24:09,197 --> 00:24:10,240 -(BUZZING) -(THUD) 311 00:24:22,419 --> 00:24:24,254 BENEDICT: Both sides suffer casualties. 312 00:24:28,341 --> 00:24:31,636 But the bees' amazing ability to work as one, 313 00:24:32,971 --> 00:24:35,474 ensures the colony lives on. 314 00:24:37,058 --> 00:24:38,393 (BUZZING) 315 00:24:46,776 --> 00:24:49,863 BENEDICT: Strength in numbers brings protection, 316 00:24:52,032 --> 00:24:55,368 but it also brings competition closer to home. 317 00:24:56,286 --> 00:24:57,579 (BIRDS SQUAWKING) 318 00:24:58,455 --> 00:25:00,707 BENEDICT: Bass Rock, Scotland. 319 00:25:02,792 --> 00:25:05,712 One hundred and fifty thousand Gannets, 320 00:25:07,464 --> 00:25:09,799 all nesting on one rock, 321 00:25:10,967 --> 00:25:13,178 less than one mile square. 322 00:25:13,929 --> 00:25:15,263 (SQUAWKING) 323 00:25:15,722 --> 00:25:17,265 BENEDICT: From a bird's eye view, 324 00:25:18,099 --> 00:25:20,310 it looks like life in perfect harmony. 325 00:25:23,021 --> 00:25:24,689 But it's just an illusion. 326 00:25:32,155 --> 00:25:33,240 Each nest 327 00:25:33,365 --> 00:25:35,784 is two beak lengths apart, 328 00:25:35,909 --> 00:25:36,952 for good reason. 329 00:25:38,119 --> 00:25:39,871 Any that overstep that mark, 330 00:25:40,705 --> 00:25:43,083 reveal the unseen tensions at play. 331 00:25:46,503 --> 00:25:48,505 Beaks designed to cut through water, 332 00:25:48,630 --> 00:25:51,091 and snatch fish at 60 miles an hour, 333 00:25:52,425 --> 00:25:54,970 also make vicious weapons. 334 00:25:59,140 --> 00:26:01,518 (SQUAWKING) 335 00:26:16,992 --> 00:26:20,829 BENEDICT: Fights for nesting space can last for two hours... 336 00:26:24,040 --> 00:26:25,041 (SQUAWKING) 337 00:26:36,136 --> 00:26:37,596 BENEDICT: ...and come at a cost. 338 00:26:46,396 --> 00:26:47,522 In nature, 339 00:26:47,981 --> 00:26:50,275 peace exists on a knife-edge. 340 00:26:59,534 --> 00:27:01,202 Conflict is always hiding... 341 00:27:02,579 --> 00:27:04,456 just below the surface. 342 00:27:14,799 --> 00:27:17,052 When it comes to securing their bloodline, 343 00:27:18,136 --> 00:27:20,805 some sink to new depths. 344 00:27:22,474 --> 00:27:24,934 Lake Tanganyika in Tanzania 345 00:27:25,226 --> 00:27:27,187 is a breeding ground for conflict. 346 00:27:31,274 --> 00:27:33,360 A male burtoni cichlid 347 00:27:33,693 --> 00:27:35,737 is desperate to impress a female. 348 00:27:42,077 --> 00:27:43,828 He performs a signature dance. 349 00:27:58,718 --> 00:27:59,844 She may not look it, 350 00:28:00,637 --> 00:28:01,971 but she's charmed. 351 00:28:05,058 --> 00:28:07,352 The aquatic Romeo sweetens the deal 352 00:28:08,019 --> 00:28:09,104 with a cichlid love potion. 353 00:28:13,024 --> 00:28:15,985 A pheromone designed to stimulate the female, 354 00:28:19,614 --> 00:28:21,616 that also travels through water, 355 00:28:23,451 --> 00:28:25,537 attracting the wrong attention. 356 00:28:28,873 --> 00:28:31,459 A local gang of cuckoo catfish. 357 00:28:33,712 --> 00:28:36,631 Their skin, covered in taste buds, 358 00:28:37,298 --> 00:28:39,426 detects the slightest hint of pheromone. 359 00:28:41,970 --> 00:28:43,513 They know it means... 360 00:28:45,390 --> 00:28:46,683 the burtonis 361 00:28:47,100 --> 00:28:48,601 are ready to spawn. 362 00:28:53,565 --> 00:28:54,774 Laying 100 eggs, 363 00:28:56,109 --> 00:28:57,902 each the size of a sesame seed, 364 00:28:58,737 --> 00:29:01,281 it's the perfect moment for an ambush. 365 00:29:09,914 --> 00:29:12,417 The catfish eat as many eggs as they can. 366 00:29:20,216 --> 00:29:21,426 And now... 367 00:29:21,843 --> 00:29:22,886 they spawn. 368 00:29:28,808 --> 00:29:30,018 Leaving behind 369 00:29:30,810 --> 00:29:33,897 tiny, ticking, time bombs. 370 00:29:37,609 --> 00:29:41,571 The burtoni mother instinctively collects any eggs. 371 00:29:43,740 --> 00:29:44,991 She's not eating them. 372 00:29:46,367 --> 00:29:48,495 She has a special ability. 373 00:29:55,210 --> 00:29:56,878 Some cichlid super-moms 374 00:29:57,003 --> 00:29:58,338 raise their babies 375 00:29:58,546 --> 00:29:59,881 in their mouths, 376 00:30:02,675 --> 00:30:07,639 using them as mobile nurseries to keep their young safe as they grow. 377 00:30:14,020 --> 00:30:17,524 But this burtoni cichlid has been hijacked. 378 00:30:20,610 --> 00:30:21,945 Hidden from sight, 379 00:30:22,278 --> 00:30:23,738 inside her mouth, 380 00:30:24,739 --> 00:30:27,909 her mixed brood begins to hatch. 381 00:30:32,872 --> 00:30:34,082 And some... 382 00:30:35,166 --> 00:30:37,669 grow much faster than others. 383 00:30:40,922 --> 00:30:43,424 The oblivious burtoni is devoting time 384 00:30:43,925 --> 00:30:46,094 to raising the wrong offspring. 385 00:30:49,889 --> 00:30:51,307 Twice the size, 386 00:30:52,642 --> 00:30:54,853 ravenous baby cuckoo catfish... 387 00:30:56,354 --> 00:30:58,022 turn on the cichlid young. 388 00:31:02,110 --> 00:31:06,197 Opening jaws wide enough to swallow their foster siblings, 389 00:31:08,032 --> 00:31:09,200 headfirst. 390 00:31:19,669 --> 00:31:21,713 The treacherous catfish babies 391 00:31:21,963 --> 00:31:24,215 soon outgrow their nursery. 392 00:31:42,650 --> 00:31:44,068 They head off alone, 393 00:31:44,485 --> 00:31:46,279 keeping a low profile, 394 00:31:46,487 --> 00:31:50,033 until ready to prey on another unsuspecting mother. 395 00:31:52,869 --> 00:31:54,203 Leaving the burtoni 396 00:31:54,579 --> 00:31:56,789 to protect her surviving offspring, 397 00:31:59,792 --> 00:32:01,669 giving them the best chance she can 398 00:32:02,170 --> 00:32:03,963 in this dangerous world. 399 00:32:13,097 --> 00:32:16,684 In Italy's Alpine meadows, there's one baby animal... 400 00:32:16,893 --> 00:32:17,977 (BIRDS CHIRPING) 401 00:32:18,061 --> 00:32:19,520 BENEDICT: ...who takes living with the enemy 402 00:32:20,271 --> 00:32:22,065 to a whole other level. 403 00:32:23,691 --> 00:32:26,778 Meet the intrepid Alcon blue caterpillar. 404 00:32:28,988 --> 00:32:30,365 Only two weeks old, 405 00:32:31,282 --> 00:32:33,701 and just the size of a grain of rice. 406 00:32:36,079 --> 00:32:39,916 It's about to embark on one of the most amazing adventures 407 00:32:40,541 --> 00:32:42,710 in the whole of the natural world. 408 00:32:49,801 --> 00:32:51,010 In search of food, 409 00:32:54,222 --> 00:32:56,641 it must descend into the underworld, 410 00:32:59,435 --> 00:33:02,730 patrolled by savage armies of Myrmecia ants. 411 00:33:05,692 --> 00:33:06,985 They can take down prey 412 00:33:07,193 --> 00:33:08,987 thousands of times their size. 413 00:33:23,918 --> 00:33:26,921 A tiny grub seems an easy target. 414 00:33:33,136 --> 00:33:36,347 Especially one that emits an alluring scent, 415 00:33:36,889 --> 00:33:38,349 betraying its presence. 416 00:33:41,019 --> 00:33:44,313 With antennae five times more sensitive than most other insects, 417 00:33:45,398 --> 00:33:48,276 an ant is onto it like a bloodhound. 418 00:33:57,994 --> 00:34:01,539 The caterpillar is an easy size to carry back to base, 419 00:34:08,004 --> 00:34:10,715 where ants prepare food for their young. 420 00:34:22,477 --> 00:34:23,644 But this caterpillar 421 00:34:24,479 --> 00:34:26,439 doesn't smell like food, 422 00:34:30,193 --> 00:34:32,528 it smells like family. 423 00:34:35,615 --> 00:34:36,824 Born to deceive, 424 00:34:36,949 --> 00:34:38,743 that special caterpillar odor 425 00:34:39,327 --> 00:34:41,913 smells so similar to the ant's grubs, 426 00:34:42,830 --> 00:34:44,791 that they treat it like their own. 427 00:34:56,094 --> 00:34:57,386 And that's not all. 428 00:34:58,471 --> 00:34:59,931 To enhance its disguise, 429 00:35:00,848 --> 00:35:03,059 the caterpillar sings. 430 00:35:03,309 --> 00:35:04,852 (PULSATING NOISE) 431 00:35:10,942 --> 00:35:14,278 BENEDICT: It's copying the song of the most important ant in the colony, 432 00:35:16,948 --> 00:35:17,990 the queen. 433 00:35:20,284 --> 00:35:21,869 Forcing dedicated workers 434 00:35:21,994 --> 00:35:23,454 to tend to its every need, 435 00:35:24,705 --> 00:35:26,499 and neglect their own. 436 00:35:30,128 --> 00:35:32,255 While the colony protects it, 437 00:35:32,797 --> 00:35:34,966 cleans it, and feeds it, 438 00:35:35,800 --> 00:35:38,678 the audacious caterpillar can keep up the act 439 00:35:39,595 --> 00:35:42,932 for two long years. 440 00:35:45,726 --> 00:35:47,228 (PULSATING NOISE) 441 00:35:52,942 --> 00:35:56,654 BENEDICT: Until 100 times its original weight, 442 00:35:59,031 --> 00:36:00,366 the baby blue 443 00:36:00,950 --> 00:36:03,911 is finally ready to reveal its true colors. 444 00:36:07,790 --> 00:36:09,041 Inside the chrysalis, 445 00:36:10,626 --> 00:36:12,837 caterpillar tissue is broken down... 446 00:36:14,130 --> 00:36:15,339 and reformed. 447 00:36:33,649 --> 00:36:36,360 But, when an Alcon blue becomes a butterfly, 448 00:36:37,695 --> 00:36:40,031 it loses its protective power. 449 00:36:43,492 --> 00:36:45,661 No longer smelling like a baby ant, 450 00:36:46,621 --> 00:36:47,955 it needs to get out... 451 00:36:48,247 --> 00:36:49,540 fast. 452 00:36:53,044 --> 00:36:56,380 Before the ants catch onto the intruder in their midst. 453 00:37:25,826 --> 00:37:28,704 Finally, the Alcon blue 454 00:37:28,788 --> 00:37:29,956 is free. 455 00:37:36,671 --> 00:37:38,547 Over billions of years, 456 00:37:39,840 --> 00:37:42,593 living things have evolved amazing abilities 457 00:37:42,677 --> 00:37:45,221 to compete for their place on this planet. 458 00:37:46,305 --> 00:37:48,266 But when a new rival comes along, 459 00:37:49,433 --> 00:37:51,560 it changes everything. 460 00:37:54,647 --> 00:37:56,899 The coastal waters of British Columbia 461 00:37:57,525 --> 00:38:00,486 are home to a legendary sea monster. 462 00:38:07,576 --> 00:38:10,371 One of the planet's fastest-growing animals. 463 00:38:13,874 --> 00:38:18,754 It doubles its weight every two months on a diet primarily of crustaceans. 464 00:38:36,981 --> 00:38:39,275 Since before the age of dinosaurs, 465 00:38:40,776 --> 00:38:43,029 the giant pacific octopus 466 00:38:43,571 --> 00:38:46,198 has been the unrivaled crab hunter down here. 467 00:38:51,037 --> 00:38:52,621 Until now. 468 00:38:58,711 --> 00:39:00,171 We have cunning ways 469 00:39:00,296 --> 00:39:02,006 to catch seafood 470 00:39:02,340 --> 00:39:04,342 without even entering the water. 471 00:39:17,188 --> 00:39:21,650 Traps are effective in attracting the octopus's favorite food. 472 00:39:25,446 --> 00:39:28,157 But when the world's most intelligent invertebrate 473 00:39:28,366 --> 00:39:30,034 is presented with a challenge, 474 00:39:31,827 --> 00:39:33,079 it doesn't give up, 475 00:39:35,623 --> 00:39:36,874 it solves it. 476 00:39:40,628 --> 00:39:42,171 Two thousand suckers, 477 00:39:43,172 --> 00:39:44,465 every individual one 478 00:39:44,590 --> 00:39:46,801 with more taste receptors than a human tongue, 479 00:39:48,427 --> 00:39:52,264 help to detect prey in the murkiest water. 480 00:40:00,898 --> 00:40:02,817 Guided by nine brains, 481 00:40:03,651 --> 00:40:04,985 one in its head, 482 00:40:05,653 --> 00:40:08,072 and a mini-brain in each of its eight arms, 483 00:40:12,451 --> 00:40:14,120 the octopus closes in. 484 00:40:17,998 --> 00:40:20,459 A boneless skeleton made of water, 485 00:40:20,918 --> 00:40:23,879 means it can contort it's nine-foot body 486 00:40:24,130 --> 00:40:25,339 through a hole, 487 00:40:25,756 --> 00:40:27,800 the width of a grapefruit. 488 00:40:45,025 --> 00:40:46,277 Now, to dine 489 00:40:46,444 --> 00:40:48,696 before the trap is lifted. 490 00:40:55,244 --> 00:40:57,163 The trap only opens one way. 491 00:41:03,335 --> 00:41:05,045 But that's no problem 492 00:41:05,171 --> 00:41:07,882 for this extraordinary escape artist. 493 00:41:17,766 --> 00:41:18,893 We may be smart, 494 00:41:20,853 --> 00:41:24,899 but we're still discovering animals have countless skills, 495 00:41:25,065 --> 00:41:26,400 every bit as impressive. 496 00:41:30,488 --> 00:41:31,489 Overlook them, 497 00:41:33,032 --> 00:41:34,825 and we may be left empty-handed. 498 00:41:44,835 --> 00:41:47,379 In a world full of unexpected foes, 499 00:41:51,717 --> 00:41:53,135 competition 500 00:41:53,344 --> 00:41:55,429 is evolution's ultimate driving force. 501 00:41:57,973 --> 00:42:01,894 The secret behind the incredible diversity of life on earth, 502 00:42:05,981 --> 00:42:08,776 and the most extraordinary animal powers. 503 00:42:11,737 --> 00:42:13,197 If you think you know nature, 504 00:42:14,698 --> 00:42:15,783 think again. 505 00:42:17,326 --> 00:42:19,328 (THEME MUSIC PLAYING)