I see from horse_lover's profile that he is only 13. This person and his sister need to learn what we all have about the plight of dogs and cats.

I certainly hope that the dogs are not bred. But I think we need to educate both of these people, not condemn them.

Until you have worked with a shelter or have done rescue work yourself, you really can't understand how bad the problem is. At 13, shelters won't let you volunteer. But visiting a couple of animal control places might give a hint of the problems.

Puppies are cute. They are also a lot of work and expense. Please try to get your sister to rethink this.