Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Baby rabbits are called kittens.
6
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
Some British police cars carry a teddy bear to console children after an accident.
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Dolphins have names for one another.
18