ACM Mastiffs
- Frederic, MI
- Responds within a few days
Upcoming litters
Expected Mastiff litter
Due Nov. 2025
Ready Jan. 14, 2026
Meet the breeder
I'm Andrea M., the breeder behind ACM Mastiffs located in Frederic, MI. At ACM, I hope to spread the love of the Mastiff far and wide. I believe this incredible breed should be in almost all homes! My dogs are bred for health, temperament, quality, longevity, and conformation. I believe in any and all health testing, and I strongly think that any potential 200-pound dog should have the best start at life. The Mastiff is a wonderful breed that truly is one of a kind! I would be honored to connect you with your next Mastiff puppy!
Q. & A. with Andrea
Why did you start breeding?
I understand the very important role that breeders undertake; today’s breeders are the guardians of future dogs. I fell in love with the idea of sharing and preserving purebred and standard Mastiffs. I am devoted to ensuring there are happy and healthy Mastiffs for others to enjoy, and I do so by responsibly growing this incredible breed.What makes your program special?
Every day is a new day to learn something new and to expand oneself. I strive to always go above and beyond and be more than an “average” Mastiff breeder. I commit to take great care with each breeding and ensure that I am producing puppies that are healthy, confident, affectionate, and excellent representations of the breed standard.What are the different breed coat colors in your program?
Our puppies include apricot, fawn, and brindle. Colors will vary depending on the parent dogs.Where do your breeding dogs live?
They live in my home.
Matched dogs
These dogs are already reserved or have gone home.
Girl 6
Went homeFemale
Girl 1
Went homeFemale
Girl 2
Went homeFemale
Boy 1
Went homeMale
Girl 4
Went homeFemale
Girl 5
Went homeFemale
Girl 8
Went homeFemale
Girl 7
Went homeFemale
Boy 2
Went homeMale
Boy 3
Went homeMale
Boy 4
Went homeMale
Girl 3
Went homeFemale
Girl 9
Went homeFemale
Getting a puppy from Andrea
Andrea 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.
Price
Puppy prices include a $600 non-refundable deposit and between $2,400 - $3,000 final payment, before taxes & fees.
Pay over time with Klarna.
“All of my puppies require the same deposit price, regardless of color or sex.”
Contract & health guarantee
Andrea 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 Andrea 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 Andrea directly.
Always communicate and pay on Good Dog.Learn more
What’s included
From Good Dog
- Lifetime support from Good Dog’s Care Team
- 10% lifetime discount on Figo pet insurance
- Puppy Training Program & private community
Enrichment & socialization
- Various sounds
- Car rides
- Surface & tactile stimulation
- Socialized with children
- Socialized in new places
- Scent introduction
- Daily handling
- Socialized with other dogs
- Introduced to people of different ages and appearances
- Socialized with other animals
Puppy health practices
- Vet check
- First round of shots and deworming
- Vet records
- Microchip
Extras
- Initial potty training
- Puppy starter kit
- Toys
- Food & treats
- Registration
- Blanket with mom & littermates’ scent
Location & pick-up
You can drive or fly to pick up your puppy from Andrea.
Breeder’s location
Meet in Frederic, MI
545 miles away
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Other pick-up locations
Meet at Detroit Metro Wayne County Airport
378 miles away
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More about Andrea
Club memberships
Andrea is a member of Mastiff club of northern ohio.
Andrea has been a member of Good Dog for almost 5 years
Andrea was screened for responsible practices and has been a member since 2021.
Andrea’s links
Andrea is a trusted Good Dog breeder
ACM Mastiffs meets or exceeds our community standards in these areas:
- Responsible breeding practices
- Health of breeding dogs and puppies
- Puppy environment and enrichment
- Buyer education and policies
Parent dogs
Andromeda, mom
Mastiff
About Andromeda
Andromeda is a female Mastiff. Carefully selected as a great representative of her breed, Andrea decided to make her part of their program. Andrea 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 health testing
Patellar Luxation, Hyperuricosuria (HUU), +8 more.
Parent health testing
Breeder-Reported Testing
Excellent level
ACM 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
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.
Patellar Luxation
Knee testing reduces the chance of passing down Patellar Luxation, which results in the kneecap becoming displaced or dislocated and can cause mild to severe joint pain.
Degenerative Myelopathy (DM; SOD1A), Multifocal Retinopathy 1 (CMR1), Full Embark Panel
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).
