



I'm Mary R., the breeder behind Rollos Vikings located in Sacramento, CA. Rollos Vikings is dedicated to breeding exceptional Black Russian Terriers, with a deep passion for this magnificent and versatile breed. As lifelong dog lovers, we Erik and Mary take immense pride in our work, striving to make a positive and lasting contribution to the Black Russian Terrier community. Our primary breeding goal is too advance the breed as a whole, focusing on improving overall health while maintaining excellence in confirmation and temperament. We never lose sight of the original purpose of the breed, carefully balancing function, structure and character in every generation. Improvements take time, and we are committed to moving our breeding program forward in a thoughtful and balanced direction.

What makes your program special?
What are the different breed coat colors in your program?
Where do your breeding dogs live?

Mary 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.

“Our pricing includes AKC Registration, vet clearances all required shots age appropriate. All suggested testing for breed specific for Health / DNA .”
Mary 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 Mary 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 Mary directly.
You can drive or fly to pick up your puppy from Mary.
Meet in Sacramento, CA
Meet at Oakland Airport
Flexible meeting point
Mary can meet at a location that works for both of you
Club memberships
Mary is a member of San Joaquin Kennel Club and BRTCA .
Certifications & recognitions
CHIC Certified.
Mary has been a member of Good Dog for almost 3 years
Mary was screened for responsible practices and has been a member since 2023.

Rollos Vikings meets or exceeds our community standards in these areas:

Black Russian Terrier
About Raven
Raven is a female Black Russian Terrier. Carefully selected as a great representative of her breed, Mary decided to make her part of their program. Mary 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.

Black Russian Terrier
About Rollo
Rollo is a male Black Russian Terrier. Carefully selected as a great representative of his breed, Mary decided to make him part of their program. Mary 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.
Rollos Vikings 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 Black Russian Terriers.
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.
DNA Disease Panel, Dominant Black DNA Test, Agouti DNA Test, Juvenile Laryngeal Paralysis & Polyneuropathy (JLPP), Hyperuricosuria (HUU)
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).