Neapolitan Mastiff

Working Group



Gopher Canyon Atlas as a pup (top) to an adult (right) from Dr. Barry Reder and owned by Bob and the Hon. Gail Rentzer.  The photo on the left is Hercules (Hercy) recently adopted by Judge Rentzer, Bob and a young friend from St Martin’s Animal Rescue

The majestic Neapolitan Mastiff is a noble and proud dog with a long history of serving mankind.  Bred to look meaner than it really is the Neapolitan is a gentle and faithful family dog.  But, it is also a protective dog suspicious of strangers and ready to defend the family and property.  This is a LARGE dog consuming close to 10 cups of food each day.  It should be firmly and consistently trained at an early age, and socialized into the human environment.  Consistent handling is also necessary to keep the dog focused on your demands and rules.  They are very good with children (females better than males), and males can be aggressive to other male canines.  Younger Mastiffs (and any large breed) should be carefully exercised to prevent damage to undeveloped bones and cartilage.  Adult dogs require daily, robust exercise.

Average Height(“‘s)
Average Weight (#’s)
Notes for owners
Calm and wary
Smooth Minimal Drools.  Needs dominent owner.

Relevant Web Sites

AKC Breed Profile

United States Neapolitan Mastiff Club

Mostly Mastiffs Mastiff history and relevant information.

Everything Neo



We STRONGLY recommend that you get your dog from a respectable breeder or rescue organization.  Pet store puppies may get their dogs from Puppy Mills that normally breed only for profit, not quality or concern for the puppy or its eventual owner.
If you would like help locating a breeder or rescue agency near you please E-Mail PGAA (, and let us know your city/state and the type of dog you are looking for.  Do not assume that PGAA has qualified all of the breeders or rescues on this site.  Do your own check of each breeder or rescue — be sure that you are comfortable with the organization before you buy, adopt or turn-over a dog.