 As a result of specialised breeding there are significant differences between field and trial @-@ bred and show @-@ bred lines of Labradors . In the United States the former are sometimes mistakenly referred to as " American " and the latter as " English " although both field and show types are bred in both countries . In the United Kingdom they are called " Field " and " Show " . Dogs bred for hunting and field @-@ trial work are selected first for working ability , where dogs bred to compete in conformation shows are selected for their conformation to the standards and characteristics sought by judges in the show ring . 
