A scorpion can hold its breath for up to 6 days.
19
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
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
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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