Original sentence: Often potential owners go through a screening process and spend time with many of the dogs before being matched to a dog.Puppy mill is a disparaging term for the practices of some dog breeders.Purchasing dogs from a pet store is therefore strongly discouraged by reputable breeders and animal shelter employees alike; it is assumed that many animal shelter dogs are pet store dogs who were purchased on impulse and abandoned when the owner loses interest.The concepts of the reputable breeder and the puppy mill both apply only to purebred dogs; mixed-breeds, or mutts, are generally given away by the people who own the parent animal.These breeders are commonly referred to as"puppy mills", alluding to the conditions and emphasis on quantity and profitability over humane treatment and quality
Edited sentence: Often potential owners go through a screening process and spend time with many of the dogs before being matched to their new furry friend.Puppy Mills.Purchasing dogs from a pet store is therefore strongly discouraged by reputable breeders and animal shelter employees alike; is it assumed that many animal shelter dogs are pet store dogs who were purchased on impulse and abandoned when the owner loses interest.These breeders are commonly referred to as "puppy mills", alluding to the conditions and emphasis on quantity and profitability over humane treatment and quality