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 sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
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Ants tend to survive in a microwave because they find the coolest spot and wait!
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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