The phrase "disreputable breeders" refers to those who breed animals in a dishonest, unethical, or irresponsible manner, often compromising the health and well-being of the animals. Full definition
Many people unknowingly buy sick and under - socialized puppies from disreputable breeders and pet stores. (homewardboundgoldens.org)
These animals are contained in cages and show signs of neglect, mistreatment and abuse at the hands of disreputable breeders of mass production dogs. (bernation.com)
Charging more for papers is one way that disreputable breeders give an air of respectability. (havanesefanciers.com)