Okay first of all what does byb mean? I have just been reading these stories about these poor puppy that people get from puppy mills and byb. I by no means am a breeder howeverI do have two females that go in to heat with in two weeks of each other and I have let one have two liters and the other is on her second. But when they have their puppies I make sure the pups are seen by my vet at least four times before I will sell them and still I have all the new owners numbers and addresses to call and check up on them. I just don't understand how people can sell someone a sick puppy it is sad.