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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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
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A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
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Cats sleep for 70% of their lives.
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The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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The colossal squid has the largest eyes in the world.
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