



I'm Colleen L., the breeder behind Round Town Mastiffs located in Circleville, OH. We're new breeders starting a small program. We hope to help provide families with quality puppies as we continue to learn & grow! Our love for our dogs pushed us to begin breeding. We love to see the results of our efforts in the sweet, happy, and healthy puppies that we’re able to share with others.

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

Colleen 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.

“Puppies will have age appropriate vaccines and deworming as well as socialization. Fully refundable if there are any issues with the puppy on our end. Otherwise non-refundable.”
Colleen 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 Colleen 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 Colleen directly.
You can drive or fly to pick up your puppy from Colleen.
Meet in Circleville, OH
295 miles away
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Colleen has been a member of Good Dog for over 3 years
Colleen was screened for responsible practices and has been a member since 2022.
Colleen’s links

Round Town Mastiffs meets or exceeds our community standards in these areas:

Mastiff
About Shadow
Shadow is a female Mastiff. Carefully selected as a great representative of her breed, Colleen decided to make her part of their program. Colleen 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.

Mastiff
About Kemper
Kemper is a male Mastiff. Carefully selected as a great representative of his breed, Colleen decided to make him part of their program. Colleen 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.
Good level
Round Town Mastiffs 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 Mastiffs.
Hip Dysplasia (Preliminary)
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.