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7 How does de Waal define friendship? “Friendship
involves liking, loyalty, and common purpose,” he says. “I
know two female chimpanzees who 30 years ago were already
close friends. They lived in a zoo group in the Netherlands
with more than 25 chimpanzees. Last year I visited and
noticed that they were still friends, still grooming each other,
helping each other in fights, and so on. Loyalty!”
8 Why do animals have friends? “Mainly because in the
long run they benefit from friendships, ” de Waal says.
“It is all give and take. Sometimes one gives more, the other
takes more, but in the end both parties gain.”
benefit If you benefit from something, it makes your life better in some way.
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