Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
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
The head of a jellyfish is called the "Bell."
6
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Sharks have been on the planet longer than trees.
14
The colossal squid has the largest eyes in the world.
4