Endangered species

Endangered leopard frogs released into the wild. Video, 00:00:30Endangered leopard frogs released into the wild

Brian May: The Badgers, The Farmers and Me. Video, 59 minutesBrian May: The Badgers, The Farmers and Me

Fresh hope for bird with bizarre 'crex crex' call

Scientists analyse sound to help endangered animals

Scientists want to send endangered animals to the Moon... sort of!

How decline of Indian vultures led to 500,000 human deaths

Endangered cheetah cubs take first steps outdoors

Aquarium challenges negative perceptions of sharks

Thousands of rare bird eggs seized in Australia

Sloth named Jude in call for Bellingham glory

Rare stripey piglets born in breeding programme

Wildlife smugglers 'freer to offend' after police cuts

Zoo breaks ground on endangered species habitat

2012: When Sir David Attenborough met Lonesome George. Video, 00:01:522012: When Sir David Attenborough met Lonesome George

Drones reveal Antarctic whale 'acrobatics'

New bigger enclosure for zoo's four lynx brothers

Dormice release to bolster 'species on the brink'

Cumbria's Red Squirrels. Video, 59 minutesCumbria's Red Squirrels

Mysterious Origins of Insects. Video, 58 minutesMysterious Origins of Insects

Endangered red wolf pack welcomes new litter of pups. Video, 00:01:43Endangered red wolf pack welcomes new litter of pups

Island fights back grey squirrel invasion. Video, 00:01:38Island fights back grey squirrel invasion

The fight to save the African penguin

Video shows dead whale across cruise ship's bow in NYC. Video, 00:00:25Video shows dead whale across cruise ship's bow in NYC