



I'm Teresa M., the breeder behind Oasis Mastiffs located in La Porte, TX. Our dogs excel in the ring and as beloved companions. We are very proud of their accomplishments and those of their puppies. All of the breeding dogs in our program are chosen for their outstanding temperament and health. Many of their puppies have grown to be exceptional service and therapy dogs. The majority are sold on pet contracts ( spay/neuter). Due to the costs increases, our current price is $4000 for limited and $5000 for full registration ( I rarely sell on full registration).

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?

Teresa 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.

“Limited registration only. All pups will come with AKC registration and microchip. All will require a written contract signed. Contracts should protect the pup first and foremost and then equally the buyer and seller.”
Teresa 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 Teresa 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 Teresa directly.
You can drive or fly to pick up your puppy from Teresa.
Meet in La Porte, TX
1189 miles away
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Meet at George Bush Intercontinental/Houston Airport
1191 miles away
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Teresa has been a member of Good Dog for about 4 years
Teresa was screened for responsible practices and has been a member since 2021.

Oasis Mastiffs meets or exceeds our community standards in these areas:

Mastiff
About Zeke
Zeke is a male Mastiff. Carefully selected as a great representative of his breed, Teresa decided to make him part of their program. Teresa 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 Lila
Lila is a female Mastiff. Carefully selected as a great representative of her breed, Teresa decided to make her part of their program. Teresa 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.
Good level
Oasis 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.
DNA Disease 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).