Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Parrot parents "name" their children with a signature call.
112
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34