When cats are happy, they may squeeze their eyes shut.
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One litter of kittens can be produced by more than one father.
57
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
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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A new born kangaroo is small enough to fit in a spoon!
7