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
When cats are happy, they may squeeze their eyes shut.
10
There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
1
Dolphins have names for one another.
18