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
Dogs have been man's pet for over 14,000 years.
224
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
The elephant brain weighs about 6,000g.
274
Early American humans hunted car-size armadillos and used their shells for houses.
12