Dogs
- 4581
- Iron Hills Mastiffs
- Maryland. Great Mastiffs past and present. Photographs, pedigrees, stud service, planned breedings.
- 4582
- Ironclad Mastiffs
- Massachusetts. Mastiff photo gallery, puppies, breed information and educational links. Coastie coloring book - a child safety book featuring Mastiff drawings which was adopted by the U.S. Coast Guard.
- 4583
- Ironways
- Breeding for soundness, type, temperament and movement. Champion stud service available. California, United States.
- 4587
- Mastiff Kennel Krozairs of Kregen
- Information about the Mastiff in Germany. Show dates and Puppy diary. Germany.
- 4588
- Mastiffhills
- Includes show results, litter announcements, pedigrees and breed information. Moscow, Russia.
- 4589
- Midknight
- Show results, photographs, pedigrees, stud service and articles on the breed. Ashville, Ohio, United States.
- 4590
- Moon River
- Small kennel in Clyo, Georgia, United States breeds only occasionally and health/temperament-tests all of their dogs. Includes photographs, pedigrees and planned breeding information.
- 4591
- Mountainview
- Occasional breeder of English Mastiffs. Includes pictures and kennel contact information. Fishkill, New York, United States.
- 4592
- Old School
- Includes pictures and information on available puppies and adult dogs. Virginia, United States.
- 4593
- Outlaw
- Breeding for confirmation. Photographs, slideshows, and breeding plans. Arizona, United States.
- 4595
- Resolute
- Photographs, health certifications, planned litters and information on the breed. Victoria, Canada.
- 4597
- St.Patricks
- Photographs, pedigrees, photo galleries, upcoming litters, stud dogs. Wisconsin, United States.