Many modern dogs are variations of former dog breeds that, for various reasons, have gone extinct. These dog breeds, in particular, are some of the most well-known breeds of dog that no longer exist.

But like many other animals, some dog breeds went extinct. The reasons for this vary, but sadly we will never have the chance ...

Some dog breeds are more popular than others; that's how life has always been, and that is how life will always be. There's no getting around that. Trends change a little, though, and dogs tend to go ...