




Caleb
3 months old · Male

Drew
3 months old · Male
I'm Dennis W., the breeder behind Cowboy Aussies located in Winslow, ME. My dogs are bred to the ASCA & AKC standards. All adults are health tested and you are welcome to see documentation of this. Health and temperament are a high priority at Cowboy Aussies. In addition to being great family companions, my dogs train and trial in Stockdog events (herding) and also Conformation.

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

These dogs are already reserved or have gone home.

Rory
Male

Bobby
Male

Corey
Male

Coal
Male

Calvin
Male

Captain
Male

Chunky
Male

Claire
Female

Annie
Female

Abby
Female
Dennis 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, Dennis partners with them to find the best puppy match.
“Puppies are matched accordingly to live their best life with a person or family that understands the breed. ”

Dennis 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 Dennis 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 Dennis 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 Dennis.
Meet in Winslow, ME
3511 miles away
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Meet at Portland Airport
5210 miles away
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Meet in Boston, MA
3663 miles away
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Dennis has been a member of Good Dog for almost 2 years
Dennis was screened for responsible practices and has been a member since 2024.

Cowboy Aussies meets or exceeds our community standards in these areas:

Australian Shepherd
About Hugo
Hugo has an amazing temperament, he is happy and very eager to please. He is very easy to live with, has medium drive. Hugo is just starting his show career and turning heads everywhere!

Australian Shepherd
About Dani
Dani finished her championship with ease. Dani is a favorite with everyone that meets her, from veterinary staff to dog show judges and many more. Her sweet disposition is hard not to like.
Excellent level
Cowboy Aussies 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 Australian Shepherds.
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.
Degenerative Myelopathy Early-Onset Risk Modifier, Pembroke Welsh Corgi Type, Early Adult Onset Deafness (EAOD), DNA Disease Panel, Multiple Drug Sensitivity (MDR1)
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).