| Breed | Past Assignments | Future Assignments |
| Best in Show | | |
| Sporting | | |
| Brittanys | | |
| Pointers | | |
| Pointers (German Shorthaired) | | |
| Pointers (German Wirehaired) | | |
| Retrievers (Chesapeake Bay) | | |
| Retrievers (Curly-Coated) | | |
| Retrievers (Flat-Coated) | | |
| Retrievers (Golden) | | |
| Retrievers (Labrador) | | |
| Retrievers (Nova Scotia Duck Tolling) | | |
| Setters (English) | | |
| Setters (Gordon) | | |
| Setters (Irish) | | |
| Spaniels (American Water) | | |
| Spaniels (Clumber) | | |
| Spaniels (Cocker) | | |
| Spaniels (Cocker) Black | | |
| Spaniels (Cocker) A.S.C.O.B. | | |
| Spaniels (Cocker) Parti-Color | | |
| Spaniels (English Cocker) | | |
| Spaniels (English Springer) | | |
| Spaniels (Field) | | |
| Spaniels (Irish Water) | | |
| Spaniels (Sussex) | | |
| Spaniels (Welsh Springer) | | |
| Spinoni Italiani | | |
| Vizslas | | |
| Weimaraners | | |
| Wirehaired Pointing Griffons | | |
| Hound | | |
| Afghan Hounds | | |
| Basenjis | | |
| Basset Hounds | | |
| Beagles | | |
| Beagles, Not Exceeding 13 In. | | |
| Beagles, Over 13 In. But Not Exceeding 15 In. | | |
| Black and Tan Coonhounds | | |
| Bloodhounds | | |
| Borzois | | |
| Dachshunds | | |
| Dachshunds (Longhaired) | | |
| Dachshunds (Smooth) | | |
| Dachshunds (Wirehaired) | | |
| American Foxhounds | | |
| English Foxhounds | | |
| Greyhounds | | |
| Harriers | | |
| Ibizan Hounds | | |
| Irish Wolfhounds | | |
| Norwegian Elkhounds | | |
| Otterhounds | | |
| Pharaoh Hounds | | |
| Rhodesian Ridgebacks | | |
| Salukis | | |
| Scottish Deerhounds | | |
| Whippets | | |
| Akitas | | |
| Alaskan Malamutes | | |
| Bernese Mountain Dogs | | |
| Boxers | | |
| Bullmastiffs | | |
| Doberman Pinschers | | |
| Giant Schnauzers | | |
| Great Danes | | |
| Great Pyrenees | | |
| Komondorok | | |
| Kuvaszok | | |
| Mastiffs | | |
| Newfoundlands | | |
| Rottweilers | | |
| St Bernards | | |
| Samoyeds | | |
| Siberian Huskies | | |
| Standard Schnauzers | | |
| Terrier | | |
| Airedale Terriers | | |
| American Staffordshire Terriers | | |
| Australian Terriers | | |
| Bedlington Terriers | | |
| Border Terriers | | |
| Bull Terriers | | |
| Bull Terriers (Colored) | | |
| Bull Terriers (White) | | |
| Cairn Terriers | | |
| Dandie Dinmont Terriers | | |
| Fox Terriers (Smooth) | | |
| Fox Terriers (Wire) | | |
| Irish Terriers | | |
| Jack Russell Terriers | | |
| Kerry Blue Terriers | | |
| Lakeland Terriers | | |
| Manchester Terriers | | |
| Manchester Terriers (Standard) | | |
| Miniature Schnauzers | | |
| Norfolk Terriers | | |
| Norwich Terriers | | |
| Parson Russell Terriers | | |
| Scottish Terriers | | |
| Sealyham Terriers | | |
| Skye Terriers | | |
| Soft Coated Wheaten Terriers | | |
| Staffordshire Bull Terriers | | |
| Welsh Terriers | | |
| West Highland White Terriers | | |
| Affenpinschers | | |
| Brussels Griffons | | |
| Chihuahuas | | |
| Chihuahuas (Long Coat) | | |
| Chihuahuas (Smooth Coat) | | |
| English Toy Spaniels | | |
| English Toy Spaniels (Blenheim & Prince Charles) | | |
| English Toy Spaniels (King Charles & Ruby) | | |
| Havanese | | |
| Italian Greyhounds | | |
| Japanese Chin | | |
| Maltese | | |
| Manchester Terriers (Toy) | | |
| Miniature Pinschers | | |
| Papillons | | |
| Pekingese | | |
| Pomeranians | | |
| Poodles (Toy) | | |
| Pugs | | |
| Shih Tzu | | |
| Silky Terriers | | |
| Yorkshire Terriers | | |
| Bichons Frises | | |
| Boston Terriers | | |
| Bulldogs | | |
| Chow Chows | | |
| Dalmatians | | |
| French Bulldogs | | |
| Keeshonden | | |
| Lhasa Apsos | | |
| Lowchen | | |
| Poodles | | |
| Poodles (Miniature) | | |
| Poodles (Standard) | | |
| Schipperkes | | |
| Tibetan Spaniels | | |
| Tibetan Terriers | | |
| Australian Cattle Dogs | | |
| Bearded Collies | | |
| Belgian Malinois | | |
| Belgian Sheepdogs | | |
| Belgian Tervuren | | |
| Bouviers des Flandres | | |
| Briards | | |
| Canaan Dogs | | |
| Cardigan Welsh Corgis | | |
| Collies | | |
| Collies (Rough) | | |
| Collies (Smooth) | | |
| German Shepherd Dogs | | |
| Old English Sheepdogs | | |
| Pembroke Welsh Corgis | | |
| Pulik | | |
| Shetland Sheepdogs | | |
| Welsh Corgis (Cardigan) | | |
| Welsh Corgis (Pembroke) | | |
| Miscellaneous Classes | | |