Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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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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Lobsters have blue blood.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
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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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