Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
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
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Parrot parents "name" their children with a signature call.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492