The K9Bridle is adjustable. Bitches often have smaller skulls than the males in any particular breed so there are sometimes two sizes next to the breed that best matches your dog. There is occasionally the exception to the rule and if you find that the size is wrong please contact us and we will send out a replacement along with a postage paid envelope for the return.
| Breed | Bitch/Dog | Breed | Bitch/Dog |
| Airedale | Medium/large | Japanese Spitz | Extra Small>Small |
| American Cocker Spaniel | Extra Small>Small | King Charles Spaniel | Extra Small>Small |
| Australian Shepherd | Medium | Labrador | Medium |
| Beagle | Small | Labrador x Collie | Small/Medium |
| Bearded Collie | Small/Medium | Lakeland Terrier | Extra Small>Small |
| Bearded Collie x Terrier | Small/small | Leonberger | Large |
| Bedlington Terrier | Extra Small>Small | Lhasa Apso | Extra Small>Small |
| Belgian Shepherd | Small>Small | Lowchen | Extra Small>Small |
| Belgian x Lurcher | Small>Small | Lurcher – Whippet type | Small |
| Bernese Mountain | Large | Lurcher – Greyhound type | Medium |
| Bichon Frise | Extra Small>Small | Mastiff | Large/Giant |
| Border Collie | Small>Small | Newfoundland | Large |
| Border Terrier | Extra Small>Small | Norfolk Terrier | Extra Small>Small |
| Boxer | Medium/Medium | Norwich Terrier | Extra Small>Small |
| Briard | Large | Novia Scotia Duck Tolling Retriever | Small>Small |
| British Bulldog | Ring for advice | Papillon | Made to Measure>Extra Small |
| Bull Mastiff | Giant | Patterdale Terrier | Extra Small>Small |
| Bull Terrier | Medium/large | Parson Jack Russell Terrier | Extra Small>Small |
| Cairn Terrier | Extra Small>Small | Pointer – English | Medium |
| Cavalier Spaniel | Extra Small>Small | Pomeranian | Made to Measure>Extra Small |
| Chihuahua | Made to Measure | Poodle – Toy | Extra Small |
| Chinese Crested | Extra Small | Poodle – Miniature | Small |
| Chow Chow | Medium/large | Poodle – Standard | Medium |
| Cocker – English | Small | Pug | Not suitable |
| Collie X breed | Small | Pug x Jack Russell xbreed | Made to Measure>Extra Small |
| Corgi | Small>Small | Pug x Papillon xbreed | Please ask suitability |
| Dachshund (Miniature) | Made to Measure | Rottweiller | Medium/large |
| Dalmatian | Medium/Medium | St Bernard | Large/Giant |
| Dobermann | Medium/large | Samoyed | Medium |
| English Setter | Medium | Schnauzer – Miniature | Extra Small>Small |
| Field Spaniel | Small | Schnauzer – Standard | Small>Small |
| Flat Coated Retriever | Medium | Schnauzer – Giant | Large |
| Fox Terrier | Extra Small>Small | Shetland Sheepdog | Extra Small>Small |
| German Shorthaired Pointer | Medium | Shih Tzu | Small |
| German Shepherd | Medium/large | Siberian Husky | Small/Medium |
| German Shepherd x Retriever | Medium/large | Soft Coated Wheaten Terrier | Small>Small |
| German Spitz | Small | Springer Spaniel – English | Small/Medium |
| Golden Retriever | Medium/large | Springer Spaniel – Welsh | Small/Medium |
| Gordon Setter | Medium | Staffordshire Bull Terrier | Medium |
| Great Dane | Large | Terrier Xbreeds | Made to Measure>Extra Small |
| Greyhound | Small/Medium | Tibetan Spaniel | Extra Small>Small |
| Hungarian Vizsla | Small/Medium | Tibetan Terrier | Extra Small>Small |
| Irish Red Setter | Small | Trailhound | Large |
| Irish Wolfhound | Medium/large | Weimeraner | Medium |
| Italian Greyhound | Made to Measure>Extra Small | West Highland Terrier | Extra Small>Small |
| Jack Russell Terrier | Made to Measure>Extra Small | Whippet | Extra Small>Small |
| Japanese Akita | Large | Yorkshire Terrier | Made to Measure>Extra Small |