The Basenji dog is the only dog that is not able to bark.
4
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Dogs have four toes on their hind feet, and five on their front feet.
179
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
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14