Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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A puppy is born blind, deaf, and toothless.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
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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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There's a rare breed of pig that looks like a sheep.
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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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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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