George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
The head of a jellyfish is called the "Bell."
6
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 can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Sloths take two weeks to digest their food.
243
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14