It is best to to bring puppy home from a breeder after twelve weeks of birth for two reasons:
1. Health Reasons:
i). Mother teaches puppies, puppy manners
ii). Healthy mothers breastfeed puppies for longer periods of time, which helps strengthen the immune system.
2. Puppy Behavior:
i). Mother teaches puppies right and wrong in the dog world, thereby reducing the need for dog trainers.