There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
A dork is a whale's penis.
327
When cats are happy, they may squeeze their eyes shut.
10
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9