To select a good Tosa-Inu breeder, Vetstreet.com suggests looking for a very experienced breeder who has well-socialized dogs with nice personalities. The breeder should offer a health guarantee on puppies and should also have tested the parents for genetic diseases and have the results available for inspection.
Good breeders acknowledge when there are health problems in the breed and are willing to talk about the incidence of these problems in their lines, according to Vetstreet.com. The Tosa used for breeding should have Orthopedic Foundation for Animals testing for hip and elbow dysplasia and Canine Eye Registry Foundation testing for heritable eye diseases. Gastric torsion (bloat) is an inherited disease that affects Tosa. There is no test for the predisposition to bloat, but breeders should be aware of the incidence of it in their lines.
An article on CBSNews.com from Feb. 2, 2005, explains that good dog breeders are very knowledgeable about their breeds. They ask prospective buyers a lot of questions because they are concerned about where their puppies end up. They may require prospective buyers to sign contracts specifying buyer responsibilities for the puppy. Breeders can also provide references, including veterinary references. It's a good idea to visit the breeder's home and meet the breeder's dogs. Avoid breeders who keep large numbers of dogs in kennels.