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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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Rattlesnake mating sessions have been known to last more than 22 hours.
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Cows can sleep standing up, but they can only dream lying down.
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Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
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The Basenji dog is the only dog that is not able to bark.
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