Small: Boston Terriers, Beagles, Corgis, Pugs, Spaniels, Eskimo Dogs, Whippets, Shelties, Schnauzers
Medium: Boxers, Wizlas, Cattle Dogs, Pit bulls, Beagles, Greyhounds, Terriers, Bulldogs, Spaniels, Border Collies, smaller sized labs
Large: Retrievers, Labs, German Shepherds, Rotties, Irish Setters, Standard Poodles, Dalmatians, Huskies, Dobermans, Hounds, Sheepdogs, Akitas, Airedale Terriers, Bloodhounds
X Large: Bernese Mountain, Swiss Mountain, Mastiffs, St. Bernard, Great Dane, Newfoundland, Leonburger, Bull Mastiff