



I'm Cassity B., the breeder behind Bastian Mountain Dogs located in Colorado Springs, CO. The loyalty and loving disposition of this breed are simply the best! We put a great deal of effort into raising our litters to ensure our puppy families will have the best experience raising their new family members.

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

These dogs are already reserved or have gone home.

Frank - Bicolor
Male

Banner - Bicolor
Male

Ned - Bicolor
Male

Red Girl
Female

Purple Girl
Female

Orange Boy
Male

Yellow Girl
Female

Green Boy - Bicolor
Male
Firework
Female
Captain
Male
America
Female
Maverick
Male
Rose
Female
Patriot
Male
Apple Pie
Female
Liberty
Male
Girl 2
Female
Kenny
Male
Girl 1
Female
Johnny
Male
Monica
Female
Ross
Male
Chandler
Male
Girl 2
Female
Girl 1
Female
Boy 2
Male
Mia
Female
Ganzol
Male
Salud
Male
Allora
Female
Buongiorno
Male
Regazza
Female
Figo
Male
Chiamare (Kia)
Female
Grazie
Female
Blossom
Female
Bubble
Female
Cal
Male
Ice
Female
Cosmo
Female
Girl 5
Female
Girl 6
Female
Boy 2
Male
Cassity 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.
After buyers complete the application and screening process, Cassity partners with them to find the best puppy match.
“Buyers get to choose their puppy. We will describe the puppies’ personalities and recommend who we think will be the best fit for each person. ”

“This price includes the health guarantee, first round of shots, dewormings, socialization, hind dew claw removal, and limited AKC Registration.”
Cassity 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 Cassity 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 Cassity 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 Cassity.
Meet in Colorado Springs, CO
5084 miles away
·
Meet at Denver Airport
5026 miles away
·
Meet in Cheyenne, WY
4961 miles away
·
Cassity has been a member of Good Dog for almost 4 years
Cassity was screened for responsible practices and has been a member since 2023.

Bastian Mountain Dogs meets or exceeds our community standards in these areas:

Bernese Mountain Dog
About Guy
Guy is an amazing Bernese boy. He is sweet, loving, playful, and smart. He has his STAR puppy and Novice Trick Dog titles and will soon have his CGC. He has OFA Good Hips (prelim), Normal Elbows (prelim), Normal Eyes, and Normal Cardiac. He also has great PennHIP scores of .25 Left and .36 Right.
Good health testing

Bernese Mountain Dog

Golden Mountain Dog
Great level
Bastian Mountain Dogs 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 Bernese 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.
DNA Disease Panel, Degenerative Myelopathy (DM; SOD1B), Bernese Mountain Dog Type, Degenerative Myelopathy (DM; SOD1A), von Willebrand Disease I (vWD I)
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).
Hear what other owners say about working with Cassity to bring home their puppies.

Jenna D.
Verified owner · Oct. 2026




Cassity was great to work with as first time dog owners. She was very responsive and knowledgeable about the breed. Cassity was transparent throughout the process and gave regular updates about the puppies. We highly recommend Bastian Mountain Dogs!

Elizabeth-Anne C.
Verified owner · Aug. 2025









Everything went GREAT! In the future I will definitely get another golden from them!
Health testing is one key piece of responsible breeding and is performed on breeding dogs to prevent the presence of heritable conditions in their puppies.