20 Photos That Show Exactly How The Nation’s Favorite Dog Breeds Have Transformed

You might think you know everything about your dog, down to where they like to be scratched and which toy they enjoy most. But if your pup is purebred, you may not know much about their breed’s history. Are you aware, for example, of how their looks have changed over the generations? Many dog breeds have totally transformed in time, so let’s now take a look at 20 of them. They might just surprise you more than your own pooch’s newest trick – we think, anyway.