It can be hard to resist the cute puppies and kittens for sale in pet store windows, but a closer look into how these stores obtain animals reveals a system in which the high price that consumers pay for “that doggie in the window” pales in comparison to the cost paid by animals who are sold in pet stores. When film star Charlize Theron heard about PETA’s investigation of puppy mills, she quickly agreed to help tell the pet shop puppies’ story.