A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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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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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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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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When dragonflies mate, their tails form a love heart.
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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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