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 group of kittens is called a "kindle".
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One litter of kittens can be produced by more than one father.
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Raj from the Big Bang Theory is married to Miss India.
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A puppy is born blind, deaf, and toothless.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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A new born kangaroo is small enough to fit in a spoon!
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