North Star Mastiffs

North Star Mastiffs is a mastiff breeder in Chadds Ford, PA, in Chester County and the Brandywine Valley near Philadelphia. North Star Mastiffs has maintained American Kennel Club registration and follows recommended health screenings for hips, elbows and cardiac function, with clearances performed by certified specialists. Holly Mehew has been involved with mastiffs for many years, focusing on sound temperaments and structural health in every generation.

Puppies are socialized daily in a family environment, sharing living space with adult dogs and children to encourage confident, well-adjusted behavior. They spend time exploring secure outdoor areas under close supervision, adapting to different surfaces and sounds to build early resilience. Each dog goes to its new home with detailed health records, vaccination updates and guidance on training methods built around positive reinforcement. Families often comment on the gentle nature of these mastiffs and their ability to settle in smoothly with an established household routine.