Traditionally Docked Dog Breeds

As of June 2022, the American Kennel Club (AKC) registers 197 dog breeds. Eighty-three (42%) of them are traditionally docked. Some, like Corgis, are graded harshly in competitions for not having properly docked tails.
Excerpt from the AKC Pembroke Welch Corgi Breed Standard:
Tail - Docked as short as possible without being indented. Occasionally a puppy is born with a natural dock, which if sufficiently short, is acceptable. A tail up to two inches in length is allowed, but if carried high tends to spoil the contour of the topline.
Here's the full AKC Pembroke Welsh Corgi Breed Standard. The AKC sometimes adjusts their listings to address public sentiment. But the traditions stand and the observed Standard parameters remain in tact.
Traditionally Docked Breeds by Group (83)
NOTE: Docking is "optional" for some breeds.
TERRIER GROUP
Airedale Terrier
Australian Terrier
Black Russian Terrier
Cairn Terrier
Glen of Imaal Terrier
Irish Terrier
Kerry Blue Terrier
Lakeland Terrier
Miniature Schnauzer
Norfolk Terrier
Norwich Terrier
Parson or Jack Russell Terrier
Rat Terrier
Russell Terrier
Sealyham Terrier
Scottish Terrier
Smooth Fox Terrier
Soft Coated Wheaten Terrier
Welsh Terrier
Wire Fox Terrier
SPORTING GROUP
American Cocker Spaniel
Brittany Spaniel
Boykin Spaniel
Clumber Spaniel
English Cocker Spaniel
English Springer Spaniel
Field Spaniel
German Shorthaired Pointer
German Wirehaired Pointer
Hungarian Vizsla
Hungarian Wirehaired Vizsla
Italian Spinone
Large Munsterlander
Long Haired Weimaraner
Spinone Italiano
Sussex Spaniel
Vizsla
Weimaraner
Welsh Springer Spaniel
Wirehaired Pointing Griffon
Wirehaired Vizsla
Working Cocker
WORKING GROUP
Boerboel
Boxer
Cane Corso
Doberman
German Pinscher
Giant Schnauzer
Great Dane
Neapolitan Mastiff
Pinscher
Rottweiler
Standard Schnauzer
Australian Shepherd
HERDING GROUP
Bouvier des Flandres
Miniature American Shepherd
Old English Sheepdog
Pembroke Welsh Corgi
Polish Lowland Sheepdog
Pyrenean Shepherd
Spanish Water Dog
Swedish Vallhund
UTILITY GROUP
Giant Schnauzer
Miniature Poodle
Miniature Schnauzer
Schipperke
TOY BREED GROUP
Australian Silky Terrier
Cavalier King Charles Spaniel
English Toy Spaniel
Griffon Bruxellois
King Charles Spaniel
Miniature Pinscher
Poodle (Toy)
Silky Terrier
Toy Fox Terrier
Yorkshire Terrier
NON-SPORTING GROUP
Norwegian Lundehund
Poodle (Minature)
Poodle (Standard)
Schipperke
Small Munsterlander
Teddy Roosevelt Terrier
HOUND GROUP
Beagle
The AKC adds new traditionally docked breeds almost every year.
When they stop, the extra space below this line will not be needed.