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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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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In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
7
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
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When dragonflies mate, their tails form a love heart.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
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