The Dogmatic Headcollar should fit snugly around your dog's face and behind the ears. You should fasten the buckle up behind the ears, so as to get a maximum of two fingers underneath. The Headcollar should not move about the face or ride up at all once the lead is attached and however much your dog pulls.
Size 1
Terriers, Shetland Sheepdogs, Whippets, Salukis, Beagles, Min Poodles, Cocker Spaniel bitches, Dachshunds, small dogs etc...
Size 2
Cocker Spaniel dogs, Collie bitches or fine dogs, PBGV’s, Greyhounds, Lurchers etc...
Size 3
Dobermann bitches, Collie dogs/Cross Collies, Standard Poodles, Afghan Hounds, Irish Setter bitches, Irish Red & White Setters, Borzoi, Samoyed, Springer Spaniels, Australian Shepherd Dogs, Huskies, Standard Schnauzers, Bearded Collies, Airedales, Bull Terriers, Boxer bitches, Dalmatian bitches, Labrador/Retriever bitches, Pointer bitches, Weimaraner bitches, Setter bitches, Staffordshire Bull Terrier bitches etc...
Size 3L
GSDs, Dobermann dogs, Italian Spinone bitches, Labrador dogs, Retriever dogs, Alaskan Malamutes, Irish Setter dogs, English Setter dogs, Gordon Setter dogs, young Boxers, Dalmatian dogs, Weimaraner dogs, Pointer dogs, Hungarian Vizslas, Rhodesian Ridgeback bitches or fine dogs, Belgian Shepherd Dogs, Large Munsterlanders, Tibetan Mastiffs etc...
Size 4
Boxers, large Labrador dogs, large Retriever dogs, Italian Spinone dogs, Staffordshire Bull Terriers, Briards etc...
Size 5
Larger Italian Spinoni, Rottweiler bitches, Bouvier bitches, Giant Schnauzers etc...
Size 6
Large Great Danes, Rottweiler Dogs, Clumber Spaniels, Bernese Mountain Dogs, Irish Wolfhounds, Bouviers, Shar-Pei, Russian Black Terriers, Bloodhounds, Basset Hounds, Dogue de Bordeau, Bullmastiffs, Old English Sheepdogs, Pyrenean Mountain Dogs, Leonbergers etc.
Size 7
Neopolitan Mastiffs, Newfoundlands, St. Bernard Bitches etc...
Size 8
St. Bernard dogs, large Newfoundland dogs etc...