Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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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!
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If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
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The colossal squid has the largest eyes in the world.
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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