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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Squirrels forget where they hide about half of their nuts.
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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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Dolphins have names for one another.
18
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5