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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When cats are happy, they may squeeze their eyes shut.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Dolphins have names for one another.
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One litter of kittens can be produced by more than one father.
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