One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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Sloths take two weeks to digest their food.
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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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In Australia, there are spiders big enough to eat snakes.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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