Why to Buy a Purebred Dog
The main reason to have a purebred dog is because you pretty much know what the temperament is like.   Example:   If you have a dog that is half Dalmatian and half collie, then you don't know what the temperament is like because it's mixed!   Plus you don't know what the puppies will look like.   Example:   If you breed a Puli with a German Shepherd then you don't know what the puppies will look like, and that might make a difference in how much money you sell them for!    So get a purebred dog and breed it with the same type of dog that's a purebred.   It will make a difference!