It models clients, not pets
In a beauty platform the client is the subject. In grooming the client pays, but the dog is what you are working on — and the dog is where the information lives: breed, coat type, matting history, temperament with a dryer, vaccination records, what the last groomer did wrong.
SmartGroom is built the other way round. The pet is the record: breed, coat notes, behaviour, vaccination history and past grooms, held against the appointment you are about to do.