


I'm Carrie L., the breeder behind Marnus Collies located in Maryland. We care deeply about Collie and have built that love and respect for the breed into every aspect of our program. their accomplishments. We are responsible breeders who are passionate about [BREED]. Our dogs are central to our lives, and we are proud of their accomplishments. We enjoy participating in conformation events and staying involved in the breed.

What makes your program special?

Carrie 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.

Carrie 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 Carrie 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 Carrie directly.
You can drive or fly to pick up your puppy from Carrie.
Meet in Maryland
45 miles away
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Carrie has been a member of Good Dog for about 4 years
Carrie was screened for responsible practices and has been a member since 2022.
Carrie’s links

Marnus Collies meets or exceeds our community standards in these areas:
Excellent level
Marnus Collies 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 Collies.
Eye Examination (rDVM, not 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, Dermatomyositis, PRA, Rod-Cone Dysplasia 2 (rcd2), 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).