The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Cats and dogs can hear ultrasound.
350
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
Dogs have four toes on their hind feet, and five on their front feet.
179
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
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
A puppy is born blind, deaf, and toothless.
16