Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
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Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
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When dragonflies mate, their tails form a love heart.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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