american mastiff breeders

Mr Big Stuff: Age 6

We Health Test & Certify Our Sires & Dams

Canine Health Information Center (CHIC)
Required : OFA Hips; OFA Elbows; OFA Heart;
and CERF – Plus : OFA Patella; OFA Thyroid;
and New OFA PRA & OFA PMR DNA Tests

mastiff breeder

Puppies & Stud Service

Mastiffs: Loyal, Obedient, & Affectionate

Dr. Paige E. Johnson
Sharon Kay Johnson

c/o Johnson Farms
P.O. Box 125
St. Mary’s County
Leonardtown, MD 20650-0125
301-475-3702 (Farm)
202-360-9400 (Mobile)

"AKC Registered Mastiffs"

mastiff puppies for sale

Storm: Age 2 (3 weeks after 1st litter)

mastiff puppies

Why Health Test? Farm Information Farm Aerial Map

English Mastiff Puppies Maryland

Welcome to Johnson Farms. We are a family owned and operated breeder of English Mastiffs. We have been breeding English Mastiffs for over 25 years. All of our Mastiff puppies are bred 1st for genetics, 2nd for loving homes. Our breeding stock are all genetically tested and certified. Johnson Farms sires and dames are health kings and queens.

Our passion is breeding healthy family life long companions. Our dogs are our family members. We raise all of our Mastiff dogs and puppies in our home on the farm, not in a kennel. All of our puppies are raised by us with plenty of affection and social interaction before being placed in a loving forever home.

We conduct genetic and health testing on all of our breeding stock to ensure health and longevity. We conduct the required four genetic tests including: OFA Hips, OFA Elbows, OFA Heart, and CERF. Being scientists ourselves, we understand the importance of genetic testing. We take the extra steps to ensure you are welcoming only the healthiest English mastiff puppies into your home by testing for additional factors: OFA Patella, OFA Thyroid, OFA PRA and OFA CMR DNA. Many of our Moms & Dads are listed in the Canine Health Information Center's (CHIC) Database.

In addition to breeding AKC Registered Mastiffs, we run a farm in Leonardtown, MD with two other units: timber production and grain production. All of our dogs are living the ideal life with fresh air and plenty of land to explore.

All of our dogs are Gentle Giants, with pleasant, calm, loyal demeanors. Their patient temperament makes them a great choice for families with children.

Contact us to keep up to date with our Johnson Farms Mastiff puppy news. We can place you on a waiting list when we have a new litter with any sex or color desires.