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
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The octopus does not have a blind spot.
273
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11