



I'm Doreen D., the breeder behind Marcy Mtn Mastiff located in Lake Havasu City, AZ. I am an AKC Breeder of Merit providing champions with consistency, offering top-quality Mastiffs for show and family companions. I'm most interested in longevity, health, and temperament. I am a preservation breeder that breeds to the written standard. I look forward to connecting with you!

Why did you start breeding?
What makes your program special?
What are the different breed coat colors in your program?
Where do your breeding dogs live?

Doreen has been certified by Good Dog’s screening team for responsible and trusted breeding practices. When you’re ready, reach out to ask about the puppies or anything else on your mind. You’ll get to know each other through messaging, phone, or video and pay securely, all on Good Dog.
Together, you’ll choose the puppy that’s right for you, stay in touch with regular updates, and plan how to bring your new puppy home.

“The price also includes a contract, a health guarantee, AKC registration, a microchip, the first round of vaccinations, and a full puppy care packet. The deposit is to hold your puppy and place it in the placement process.”
Doreen may provide a written contract or health guarantee when you purchase a puppy. This helps protect both you and your breeder, ensuring that you both have a clear understanding of the terms of your puppy purchase. If Doreen offers a contract or guarantee, the details will be personalized by them. If you have any questions or want to know more, don't hesitate to reach out to Doreen directly.
When you pay and communicate on Good Dog, you’re covered by Payment Protection.
You can drive or fly to pick up your puppy from Doreen.
Meet in Lake Havasu City, AZ
2050 miles away
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Meet at North Las Vegas Airport
2059 miles away
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Club memberships
Doreen is a member of The Mastiff Club of America.
Certifications & recognitions
Professional Handler, AKC Canine Ambassador, CHIC Certified, Puppy Culture Breeder, AKC Breeder of Merit.
Doreen has been a member of Good Dog for about 5 years
Doreen was screened for responsible practices and has been a member since 2021.
Doreen’s links

Marcy Mtn Mastiff meets or exceeds our community standards in these areas:
Excellent level
Marcy Mtn Mastiff reports to performing the health tests below on their breeding dogs. Ask your breeder about the tests performed on the parents of your litter. Learn more about health testing for Mastiffs.
Hip Dysplasia
Hip testing reduces the chance of passing down hip dysplasia, which is primarily found in large breed dogs and can cause hip pain and the eventual loss of the function of the hip joint.
Elbow Dysplasia Finals (OFA, BVA, SV, FCI)
Elbow testing reduces the chance of passing down elbow dysplasia, which is primarily found in large breed dogs and can cause arthritis in the elbow joint and front leg lameness.
Eye Certification (CAER, registered with OFA)
Eye testing reduces the chance of passing down a wide range of hereditary eye illnesses including retinal dysplasia, lens luxation, and glaucoma, which can cause impared vision or blindness.
Cardiac Evaluation (registered with OFA)
Heart testing reduces the chance of passing down congenital heart disease, which can cause a range of symptoms ranging from trouble exercising to heart failure.
Canine Good Citizen (CGC)
A breeder may perform additional tests on their dogs that do not fall into these general categories. These tests may be more uncommon or very specific to a particular breed.
Cystinuria Type 3, English Mastiff Type Risk Factor
Genetic testing reduces the chance of passing down a wide variety of hereditary diseases of differing prevalence and severity such as Progressive Retinal Atrophy (an eye disease) and Von Willebrand's Disease (a blood disease).