The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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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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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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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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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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An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
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In 1949, an official boxing match between a bear and a man was held. The bear won.
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