No matter how "reputable" you think your local pet store is, they are almost surely getting their kittens from a "backyard" kitten breeder. The majority of purebred kittens are the product of irresponsible "backyard" kitten breeders. These are people who make some easy cash by breeding their purebred cats and they often also sell kittens through the newspaper classified ads. Remember that most of these backyard kitten breeders don't know about breeding for favorable health and temperament qualities, and they don't know how to raise a properly socialized litter. Many of these little kittens are weaned from their mothers way too soon. Sometimes, a backyard kitten breeder turns into small-time kitten mill to increase their supply so you can buy a kitten from a pet store and they can make a higher profit. How can you stop kitten mills? There is only one way. Take away their profits. Remember before you buy a kitten, keep in mind adoption is the most humane option!