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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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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A puppy is born blind, deaf, and toothless.
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One litter of kittens can be produced by more than one father.
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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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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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