In the United States, a backyard breeder is someone who breeds animals, often without registration and with a focus on profit.

Buyers' willingness to purchase these toy breeds from pet stores or backyard breeders supports irresponsible breeding.

The aim is to crack down on impulse purchases and shut down unregistered backyard breeders.

Lori was what is known as a backyard breeder.

Ana was born to a backyard breeder, and proved to be too active to work as an assistance dog.

The club frets about backyard breeders ruining the dog.

"These backyard breeders are going out of their way to create as crazy a dog as they can," Mr. Corson said.

Oftentimes "backyard breeders" have been known to over breed or breed dogs with health problems.

While the price for the pigs has dropped as low as $150, the animals are often sold for less by backyard breeders.