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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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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A group of kittens is called a "kindle".
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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Early American humans hunted car-size armadillos and used their shells for houses.
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