Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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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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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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The Platypus used to be considered a myth like Bigfoot and the Yeti.
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Giant Anteaters' front legs look like a panda.
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Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
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