Maine Coon
Many of the original Maine Coon cats that inhabited the New England area possessed a trait known as polydactylism (having one or more extra toes on a paw). Polydactylism is rarely, if ever, seen in Maine Coons in the show ring, since it is not allowed by competition standards. The gene for polydactylism is a simple autosomal dominant gene, which has shown to pose no threat to the cat's health. Polydactyly in Maine Coon cats is characterised by broad phenotypic diversity. Polydactyly not only affects digit number and conformation, but also carpus and tarsus conformation. The trait was almost eradicated from the breed due to the fact that it was an automatic disqualifier in show rings. Private organizations and breeders were created in order to preserve polydactylism in Maine Coon cats.