No not all purebred puppies are inbred if they come from a responsible and ethical breeder. If you are wondering if "purebred" pet store puppies are then most likley yes. They are bred in puppy mills as no ethical and responsible breeder would allow their dogs to be sold in pet stores. They come from puppy brokers who drive around the country buying puppies cheaply from puppy mills and then drive around and sell them to pet stores.

What you aren't seeing is the approximate 1/3 to 1/2 of the puppies taken on those trips who die along the way or in the back room of the pet store. If you really want to rescue a dog from a bad situation, get one from a shelter. DON'T buy a pet store puppy. People will argue that they need homes too, but if you buy them you are just opening up the spot for another puppy from abused and caged animals being bred to death in their own excrement and that of other dogs, most with rotten teeth and many with severe injuries; then put down when they can no longer breed, if they are lucky. Some are just left to die. I couldn't, in good concience, buy a puppy that way, knowing it would just make the problem worse for those left in their cages pumping out puppies to death.

I'm glad your mom said what she did and she's right.