Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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The oldest creature ever found was Ming the clam at an admirable 507 years old.
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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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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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