I do not recommend buying from a pet store, either. There is no way to know for sure if the puppies came from a reputable breeder, a puppy mill, or a backyard breeder. If you want to find the breeder yourself instead of hiring someone to do it for you, here are a few tips. I always recommend that you view the facilities of the breeder. This will tell you a lot about the breeder.
Puppies are very impressionable until about four months of age.
They learn from adult dogs. If they are around friendly dogs, they learn to be friendly. If they are around aggressive dogs, they learn to be aggressive. Some mother s are very protective of their litter when strangers are around. Do not be afraid to ask questions.