



I'm Sandy H., the breeder behind Red River Mastiff located in Howe, TX. Our puppies are bred for health and family-oriented loving pets. We are dedicated to providing families with these loyal companions.

Why did you start breeding?
What makes your program special?
Where do your breeding dogs live?

These dogs are already reserved or have gone home.

Boy 1
Male

Boy 2
Male

Boy 2
Male

Boy 4
Male

Boy 6
Male

Boy 5
Male

Pink girl
Female

Lavender girl
Female
Boy 2
Male
Boy 5
Male
Boy 4
Male
Boy 3
Male
Boy 1
Male
Girl 2
Female
Girl 3
Female
Girl 1
Female

Girl 1
Female

Girl 2
Female
Sandy 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.

"Non-refundable deposit to ensure the puppies are going to loving forever homes. . Non-refundable deposit to ensure the puppies are going to loving forever homes."
Sandy 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 Sandy 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 Sandy directly.
You can drive or fly to pick up your puppy from Sandy.
Meet in Howe, TX
1130 miles away
·
Meet at Dallas Love Field
1162 miles away
·
Sandy has been a member of Good Dog for over 6 years
Sandy was screened for responsible practices and has been a member since 2019.

Red River Mastiff meets or exceeds our community standards in these areas:

Sandy H.


Mastiff
About Violet
Violet is a female Mastiff almost 5 years old. Carefully selected as a great representative of her breed, Sandy decided to make her part of their program. Sandy 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 Rose
Rose is a female Mastiff. Carefully selected as a great representative of her breed, Sandy decided to make her part of their program. Sandy 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 Lily
Lily is a female Mastiff. Carefully selected as a great representative of her breed, Sandy decided to make her part of their program. Sandy 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 Tulip
Tulip is a female Mastiff about 4 years old. Carefully selected as a great representative of her breed, Sandy decided to make her part of their program. Sandy 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.
Uploaded health tests

Mastiff
About Dexter
Dexter is a male Mastiff. Carefully selected as a great representative of his breed, Sandy decided to make him part of their program. Sandy 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.
Uploaded health tests
Good level
Red River 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.
DNA Profile, Full Embark Panel
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).
Health testing is one key piece of responsible breeding and is performed on breeding dogs to prevent the presence of heritable conditions in their puppies.
Health testing is one key piece of responsible breeding and is performed on breeding dogs to prevent the presence of heritable conditions in their puppies.