When cats are happy, they may squeeze their eyes shut.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
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
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
One litter of kittens can be produced by more than one father.
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