Dogs can make about 100 different facial expressions.
18
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
Dogs have four toes on their hind feet, and five on their front feet.
179
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
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11