For around 30,000 years now, dogs have been living with humans. They have proven themselves to be loyal friends.
Through time, selective breeding has transformed the original look the dogs had. They now look very different from the way they did back then.
That has mainly stemmed from the fact that people breed dogs to their liking. That makes them change physically and mentally. They are exposed to such conditions that many times result in health conditions.
In the twentieth century, improved ways of selective breeding were introduced. That is why well-known dog breeds look different from how they looked one hundred years ago.
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The Bull Terrier has transformed from being taller, leaner and meaner, to a shorter, stout look. The snout is different from the earlier breed a century ago.
Most of the dogs have changed in appearance to a great extent. These are the Saluki, the Chow Chow, the boxer, the Rottweiler, West Highland White Terrier, the Scottish Terrier, the German Shepherd, the Dobberman, and the Dachshund.
However, some have small differences that can easily be overlooked. These are like the pug, the Irish Setter, the Old English sheepdog, Basset Hound, Newfoundland, the German Shepherd, the Shetland Sheepdog, the Airedale Terrier, and the Great Dane.