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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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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The cat brain weighs about 30g.
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Dogs have been man's pet for over 14,000 years.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Squirrels forget where they hide about half of their nuts.
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