Yorkies on sale! Bulldogs sold here! Have you ever seen signs like these while walking past a pet store? You see the puppies jumping around and they look really happy right? Wrong. 98% of the dogs and cats that you see in these stores are from puppy mills. A puppy mill is a commercial breeding facility that's main focus is on increasing profit. Can you imagine living in a small wire cage without comfort, toys or human interaction? This is the life of a dog living in puppy mills. 4 to 5 million dogs are killed in puppy mills every year. That's about 11,000 dogs everyday. Or 1 dog killed every 8 seconds. If you have a dog or cat chances are if you got them from a pet store or a breeder, they might be from a puppy mill.