Is there such a thing as "responsible" companion animal breeders? Most people are becoming aware of "puppy mills" where animals are kept in deplorable conditions, only being kept alive to make babies to be sold. Many puppy mill animals are sold online or through chain pet stores.
Is there ever a good reason to purposely breed dogs, cats, hamsters, whatever? Does breeding livestock differ from breeding companion animals? What about "sporting" animals, such as thoroughbred racehorses or hunting dogs?