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
The Basenji dog is the only dog that is not able to bark.
4
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Dogs can make about 100 different facial expressions.
18
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250