


I'm Mai C., the breeder behind Tundra Mastiffs located in Oregon. We are experienced, reputable Mastiff breeders. We take great pride in our dogs, our puppies, and our program. It’s important to us that we continue to improve our program and share our knowledge with our buyer families. We want to better the breed through thorough health testing and selective breeding decisions.


Mai 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.

Mai 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 Mai 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 Mai directly.
You can drive or fly to pick up your puppy from Mai.
Meet in Oregon
2230 miles away
·
| ← | Move left |
| → | Move right |
| ↑ | Move up |
| ↓ | Move down |
| + | Zoom in |
| - | Zoom out |
| Home | Jump left by 75% |
| End | Jump right by 75% |
| Page Up | Jump up by 75% |
| Page Down | Jump down by 75% |
Mai has been a member of Good Dog for over 3 years
Mai was screened for responsible practices and has been a member since 2022.

Tundra Mastiffs meets or exceeds our community standards in these areas:
Excellent level
Tundra 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.
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.
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).