The penguin is the only bird that can swim, but cannot fly.
1
Tigers have striped skin, not just striped fur!
78
Hummingbirds can't walk.
32
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
It is possible for a scorpion to sting itself to death as they are not immune to their own poison!
39
If a man could run as fast for his size as an ant can, he could run as fast as a racehorse.
108
Sharks, like other fish, have their reproductive organs in their chests.
248
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