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Welcome to River Valley Mastiffs

We are nestled in the Columbia Basin in the beautiful Pacific Northwest. Established in 2011 we started raising quality Mastiffs with great health and solid temperaments. We do not breed very often and we are picky about the dogs we breed. Our puppy buyers become part of our family and we love keeping in touch. We are here for the lifetime of the dog, and beyond. 

We started showing our dogs in 2018 and have since racked up a few titles on some of our dogs. Watch for us in the show ring in the future! We always have time to discuss our dogs, meet new people who have an interest in our dogs, and general questions about the breed whether you choose us as your breeder or someone else. We do health test our dogs and you can be assured that any of our dogs will be free of any of the genetic diseases that plague our breed and cut their lives short. We also OFA test our breeding dogs to ensure that puppies are not predisposed to any debilitating diseases like hip dysplasia or elbow dysplasia. 

Please, feel free to send us an email at rivervalleyenglishmastiffs@gmail.com
or locate us on Facebook by searching our name!

We are Proud Members of the Mastiff Club of America