When cats are happy, they may squeeze their eyes shut.
10
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
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
One litter of kittens can be produced by more than one father.
57
Dolphins have names for one another.
18