Dogs have four toes on their hind feet, and five on their front feet.
179
Cats and dogs can hear ultrasound.
350
Dogs can make about 100 different facial expressions.
18
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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