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.
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When cats are happy, they may squeeze their eyes shut.
10
Sea otters hold hands while sleeping so they don’t drift away from each other.
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There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
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A group of pugs is called a grumble.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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