


I'm Harry C., the breeder behind Isinglass Collies located in New Hampshire. Our goal is to ensure every dog from our program is set up to live a happy and healthy life and is prepared for its future role. It is important to us not only that we preserve our own phenomenal bloodlines, but that we are improving this breed with each litter and ensuring the well-being of these dogs for generations more to come!


Harry 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.
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.

Harry 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 Harry 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 Harry 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 Harry.
Meet in New Hampshire
420 miles away
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Harry has been a member of Good Dog for over 4 years
Harry was screened for responsible practices and has been a member since 2021.

Isinglass Collies meets or exceeds our community standards in these areas:
Isinglass 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 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.