Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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When dragonflies mate, their tails form a love heart.
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The colossal squid has the largest eyes in the world.
4
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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