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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Lobsters have blue blood.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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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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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.
22
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
Dolphins have names for one another.
18
It has been scientifically proven that stroking a cat can lower one's blood pressure!
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