Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Parrot parents "name" their children with a signature call.
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Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
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