Dogs have four toes on their hind feet, and five on their front feet.
179
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
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Dogs can make about 100 different facial expressions.
18
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