The term 'Kennel Club Category' is composed of three crossword solutions: BREED (5 letters), SETTER (6 letters), and TOY (3 letters). A BREED is a type of animal, such as a dog or cat, that has been selectively bred to have certain characteristics. A SETTER is a type of hunting dog that is used to locate game birds by scent. TOY is a category of small dog breeds that are typically under 10 pounds in weight. All of these terms are related to the Kennel Club, which is an organization that registers purebred dogs and promotes responsible dog ownership.