A group of pugs is called a grumble.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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Dogs have been man's pet for over 14,000 years.
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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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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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