flawless honey is exposing her opened tight snatch in closeup.

The mastiff club of america

Est. 1929

About Us

The Mastiff Club of America is the official organization  recognized by the American Kennel Club as the national parent club of the Mastiff

Who can join? Membership is open to persons 18 years or older, in good standing with the American Kennel Club, who subscribe to the purposes of the Club, and who agree to abide and uphold the club’s
Code of Ethics, Constitution and By-Laws.

Applicants must be sponsored by two MCOA members who have been members in good standing for at least three years. Applicants will be an associate member (without voting or office holding privileges) for a period of one year.
To join the MCOA please visit the Membership page to fill out an application.

The Mastiff Club of America requires its members to adhere to the following guidelines which constitute its Code of Ethics. The Club also requires that members, breeders and stud dog owners not aid or abet the violation of these guidelines by anyone else. The Club does not entertain contractual disputes as a part of its hearing process, but will determine if any additional actions should be taken, if such contractual disputes have been remedied by other parties, or institutions. This Code details certain practices necessary to implement the objectives of the Club as outlined in Article 1, Section 2 of its constitution.
Read more…

There is evidence of Mastiff-like giant dogs dating back as far as 2500 BC in the mountains of Asia. Bas-reliefs from the Babylonian palace of Ashurbanipal (now on display in the British Museum) depict Mastiff-type dogs hunting lions in the desert near the Tigris River.

Their coloration, of course, cannot be told, but other than being taller and leaner than current-day Mastiffs (as ours would be if raised in a desert and fed lightly), they are remarkably like our modern Mastiffs, despite the passing of nearly 4500 years. Read more…

General Appearance
The Mastiff is a large, massive, symmetrical dog with a well-knit frame. The impression is one of grandeur and dignity. Dogs are more massive throughout. Bitches should not be faulted for being somewhat smaller in all dimensions while maintaining a proportionally powerful structure. A good evaluation considers positive qualities of type and soundness with equal weight.
Size, Proportion, Substance
Size – Dogs, minimum, 30 inches at the shoulder. Bitches, minimum, 27-1/2 inches at the shoulder. Fault-Dogs or bitches below the minimum standard. The farther below standard, the greater the fault. Read more…



Years Incorporated




AKC Registered Mastiffs 2022


National Specialties

What's happening

See up-coming specialty events, past specialty results, and the national archive of all past results.

National Specialty

2024 MCOA National Specialty

The Mastiff Club of America 2024 National Specialty will be held in Clymer, New York at the Peak’n Peak Resort on May 7-12 Hosted by Empire State Mastiff Fanciers

National winners

2023 Specialty Results

Congratulations to the 2022 MCOA National Specialty winners. 

National archive

Past specialty winners

View the Mastiff Club of America national archive of past Best of Breed and Best of Opposite national specialty winners.


The MCOA Charitable Trustees and the MCOA Health Committee volunteers have been working on fundraising events and opportunities to bring in revenue to meet our current and future financial obligations related to Mastiff Health. You can help us in this effort by making a direct donation or by shopping with MCOA.

A beautiful Mastiff head keychain. Stainless steel.
Mastiff earings in your choice of either stainless steel, or gold plated.
4 Mastiffs (gold, rose gold, silver, and gunmetal) on a heart-shaped keychain.
Necklace with Mastiff PendantChain length: 18″ with 2″ extensionPendant: 1.5″ tall x 5/8″ wide

Their Future Starts with you.

The MCOA is a non-profit organization.  Membership is open to all persons who are in good standing with the American Kennel Club and who subscribe to the purposes of this Club.  

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