One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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A group of pugs is called a grumble.
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When cats are happy, they may squeeze their eyes shut.
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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