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Texas blind salamander Channel: BBC Nature Length: 0 Date: August 16, 2010 Fewer than 100 of these cave dwellers remain in the world.

North Sea killer whales Channel: BBC Nature Length: 0 Date: August 16, 2010 From the deck of a mackerel trawler, Gordon Buchanan films dozens of killer whales

Cave of swallows Channel: BBC Nature Length: 0 Date: August 16, 2010 Extreme sport in the extreme environment of Golondrinas, the world’s deepest cave shaft.

Killer whale hunt Channel: BBC Nature Length: 0 Date: August 16, 2010 A grey whale calf is no match for specialised ocean hunters.

Disadvantaged buffalo Channel: BBC Nature Length: 0 Date: August 16, 2010 Lions have the upper hand when the buffalo are in poor condition.

Drinking time Channel: BBC Nature Length: 0 Date: August 16, 2010 Buffalos travel great distances to reach their favourite watering holes.

Sure footing Channel: BBC Nature Length: 0 Date: August 16, 2010 A young ibex kid turns the sheer cliffs to advantage.

Sophisticated engineers Channel: BBC Nature Length: 0 Date: August 16, 2010 Prairie dogs live in a series of complex burrows and underground chambers.

Gopher tortoise burrows Channel: BBC Nature Length: 0 Date: August 16, 2010 Tortoise engineers keep their cool in a bush fire.

Pygmy parrot inspection Channel: BBC Nature Length: 0 Date: August 16, 2010 Closer inspection of a small parrot.

Lake Baikal life Channel: BBC Nature Length: 0 Date: August 16, 2010 Bizarre and ancient life forms in the freezing depths of the world’s deepest lake.

Ussuri tigers Channel: BBC Nature Length: 0 Date: August 16, 2010 One of the last strongholds of the world’s largest living cat.

Time to play Channel: BBC Nature Length: 0 Date: August 16, 2010 Will future generations enjoy the sight of tiger cubs at play?

Don’t get distracted Channel: BBC Nature Length: 0 Date: August 16, 2010 Chital deer are distracted by the rut and unaware of a tiger.

Cave glow worms Channel: BBC Nature Length: 0 Date: August 16, 2010 Recently developed image intensifier technology reveals their true nature.

Kangaroo court Channel: BBC Nature Length: 0 Date: August 16, 2010 Male kangaroos decide who gets to be top dog.

Solar powered lizards Channel: BBC Nature Length: 0 Date: August 16, 2010 Lizards in the desert have various methods of advertising their territory.

Deadly dentures Channel: BBC Nature Length: 0 Date: August 16, 2010 The carnivores' diet of meat requires specialist teeth.

Sand boa Channel: BBC Nature Length: 0 Date: August 16, 2010 A deadly predator travels under the sand to ambush its prey.

Titan of the flowers Channel: BBC Nature Length: 0 Date: August 16, 2010 The titan arum produces the world’s largest flower.

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