Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
11
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The Basenji dog is the only dog that is not able to bark.
4
A man is more likely to get a woman's phone number if he is accompanied by a dog.
20
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
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
Cats and dogs can hear ultrasound.
350