Baby sharks hunt down their siblings while still in the womb

Are humans making penguins sick?

Shere Khan the Noah's Ark tiger has died

Why wild giraffes are suffering a 'silent extinction'

Birds of Australia steal the spotlight in inaugural photo contest

New Jersey makes history by banning wild animal circus acts

Shark populations decline by up to 90 percent along Australian coast

Female frogs in the country prefer to be serenaded by city frogs

Playful killer whales join woman for a swim off New Zealand coast

7 of the smallest amphibians and reptiles

8 vampire animals that aren't necessarily bloodsuckers

Watch a young humpback whale play with her favorite 'stick'