Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Cats and dogs can hear ultrasound.
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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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During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
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