Backyard breeders are usually large operations who breed substandard cats of many breeds in wholesale quantities for quick profit. They generally know little if anything about breed standards and breed for quantity, rather than quality. BYB's kennels are overcrowded and unsanitary, and their cats are often sick and/or malnourished.
Backyard breeders commonly advertise in local newspapers, and on Internet conglomerate "cats for sale" sites.

