Sea otters hold hands while sleeping so they don’t drift away from each other.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Dolphins have names for one another.
18
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13