Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
One litter of kittens can be produced by more than one father.
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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
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Sea otters hold hands while sleeping so they don’t drift away from each other.
104