



I'm Heather M., the breeder behind Eagle Clan Mastiffs located in Henderson, NV. I breed for quality, health, show, and companionship. I love my dogs and what I do. My program produces healthy, beautiful Mastiff puppies. I take my job seriously, knowing that my puppies will become someone's well-loved pet. Each puppy is considered a member of my family and I ensure they are socialized, healthy, and prepared to excel in their forever homes.
Why did you start breeding?
What makes your program special?
Where do your breeding dogs live?
Heather has been certified by Good Dog's screening team for responsible and trusted breeding practices. When you're ready to reach out, feel free to ask any questions about the breed, their program, or specific puppies.
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.

Heather 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 Heather 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 Heather directly.
You can drive or fly to pick up your puppy from Heather.
Meet in Henderson, NV
2056 miles away
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Meet at Harry Reid Airport
2059 miles away
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Club memberships
Heather is a member of The Mastiff Club of America.
Heather has been a member of Good Dog for about 5 years
Heather was screened for responsible practices and has been a member since 2020.
Heather’s links

Eagle Clan Mastiffs meets or exceeds our community standards in these areas:
Mastiff
About Cholula
Cholula is a female Mastiff. Carefully selected as a great representative of her breed, Heather decided to make her part of their program. Heather has passed Good Dog’s screening process, which involved a review of their breeding practices, environment, and the mental and physical health of their dogs.
Mastiff
About Gabby
Gabby is a female Mastiff. Carefully selected as a great representative of her breed, Heather decided to make her part of their program. Heather has passed Good Dog’s screening process, which involved a review of their breeding practices, environment, and the mental and physical health of their dogs.
Mastiff
About Abrams
Abrams is a male Mastiff. Carefully selected as a great representative of his breed, Heather decided to make him part of their program. Heather has passed Good Dog’s screening process, which involved a review of their breeding practices, environment, and the mental and physical health of their dogs.
Great level
Eagle Clan Mastiffs 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.
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.
Thyroid (Autoimmune Thyroiditis, registered with OFA)
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.
Degenerative Myelopathy (DM; SOD1A), Early Onset Progressive Retinal Atrophy (EOPRA), Multifocal Retinopathy 1 (CMR1)
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).