


I'm Roseanna C., the breeder behind Manzinita Farm Spanish Mastiffs located in Eureka, MT. Our dogs are bred for their true purpose first and foremost, Livestock Guardian Dogs. I am passionate about making sure that I am breeding for health, mindset, longevity and the betterment of the breed overall. Our adult dogs live with their livestock charges but are also well socialized members of our family.
Why did you start breeding?
What makes your program special?
Where do your breeding dogs live?
Roseanna 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.

“Puppies that display early and noticeably LGD mindset and tendencies will be placed in working homes and are $3000. Pups more suited as primarily companions are priced at $1800 with a strict spay/neuter contract. All puppies come with vaccinations, deworming and micochip. Once bitch is confirmed bred, there is a $200 deposit to hold your place. Once pups are born and one is chosen for you, the balance must be paid before pickup/shipping. Refunds only if pup is not born.”
Roseanna 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 Roseanna 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 Roseanna 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 Roseanna.
Meet in Eureka, MT
1965 miles away
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Meet at Spokane Airport (Geiger Field)
2073 miles away
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Roseanna has been a member of Good Dog for about 4 years
Roseanna was screened for responsible practices and has been a member since 2022.

Manzinita Farm Spanish Mastiffs meets or exceeds our community standards in these areas:
Spanish Mastiff
About Jangles
Jangles is a male Spanish Mastiff. Carefully selected as a great representative of his breed, Roseanna decided to make him part of their program. Roseanna 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.
Spanish Mastiff
About Ellie
Ellie is a female Spanish Mastiff. Carefully selected as a great representative of her breed, Roseanna decided to make her part of their program. Roseanna 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
Manzinita Farm Spanish 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 Spanish 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.
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).