A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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A new born kangaroo is small enough to fit in a spoon!
7
One litter of kittens can be produced by more than one father.
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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.
16
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11