Kennels specialize in breeding dogs. They are more professional and the dogs will be healthier and more selective. You can also see the parents of the dogs, which makes it easier to confirm the pedigree of the dogs; while pet shops Dogs are purchased from various places for sale, so the source of the dogs is unclear, and the health of the dogs cannot be guaranteed. If a dog gets sick in the kennel, it will be immediately isolated and treated. However, the pet shop's care for dogs is not as professional as the kennel, so the dog has a higher chance of getting sick and infected with the virus.