



I'm Jenny B., the breeder behind Cornerstone Kennels located in Colorado. Cornerstone is a breeder of AKC Greater Swiss Mountain Dogs and AKC Rottweilers in the beautiful Front Range of Colorado. Cornerstone was founded by Rita Rimler and is based on the philosophy of breeding “Dogs of Form and Function”. We are dedicated to breeding healthy, structurally sound, and correct dogs who can and DO succeed at performing the working activities they were originally bred to do. Rita & Jenny are both proud to be recognized as AKC “Breeders of Merit”, and Cornerstone Dogs have been competing and excelling at such activities as Conformation, Herding, Draft Work, Agility, Obedience, Rally, and Pack-hiking.

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

Jenny 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.

“If Cornerstone does NOT have a puppy for you after you have given a deposit, we will either apply the deposit to a future litter or refund the deposit.”
Jenny 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 Jenny 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 Jenny directly.
You can drive or fly to pick up your puppy from Jenny.
Meet in Colorado
Club memberships
Jenny is a member of Mile High Rottweiler Club of Greater Denver and Greater Swiss Mountain Dog Club of America.
Certifications & recognitions
AKC Breeder with H.E.A.R.T., AKC Breeder of Merit.
Jenny has been a member of Good Dog for over 5 years
Jenny was screened for responsible practices and has been a member since 2020.

Cornerstone Kennels meets or exceeds our community standards in these areas:

Greater Swiss Mountain Dog

Rottweiler
Excellent level
Cornerstone Kennels 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 Greater Swiss Mountain Dogs.
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.
Patellar Luxation
Knee testing reduces the chance of passing down Patellar Luxation, which results in the kneecap becoming displaced or dislocated and can cause mild to severe joint pain.
Dentition, Shoulder Osteochondrosis
A breeder may perform additional tests on their dogs that do not fall into these general categories. These tests may be more uncommon or very specific to a particular breed.
OFA/CHIC DNA Repository
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).