The discovery of the size gene in dogs was huge in canine science. One reason is because so many other traits tag along with it. In the Nov/Dec 2010 issue of The Bark magazine, I wrote about this discovery in detail.
All puppies start out the same size and shape at birth.
Can you match the pups in this picture to the breed of dog? Answers are at the bottom of the post.
Boxer, Chihuahua, Great Dane, Labrador Retriever,
Mastiff, Shih Tzu, Swiss Shepherd, Weimaraner
(Puppy dog pictures courtesy of The Bark)
We never think about how weird dogs are because they're so familiar (There's a reason they're named canis familiaris). But think of it this way: If people were as physically varied as dogs, we'd weigh between 20 and 650 pounds and range in height from 3 to 10 feet.
This 1917 photo features a 4 pound Yorkshire Terrier and a 180 pound Saint Bernard.
A-2 Chihuahua; B-5 Mastiff; C-3 Great Dane; D-4 Labrador Retriever; E-7 Swiss Shepherd; F-6 Shih Tzu; G-8 Weimaraner; H-1 Boxer