| Size |
Neck (inches) |
Chest (inches) |
Weight (lbs) |
Breed |
| Mini |
7.8-8.7 |
9.8-11.8 |
<10 |
Chihuahua, Yorkshire Terrier, Pomeranian, Maltese |
| Small |
7.8-9.4 |
11.4-14.1 |
8-17 |
Jack Russell Terrier, Pekingese, Maltipoo, King Charles Spaniel |
| Medium |
9-11 |
13.8-16.5 |
15-35 |
Cocker Spaniel, Beagle, French Bulldog, Pembroke Welsh Corgi |
| Medium |
11.8-13.4 |
18.1-20.9 |
30-65 |
Bulldog, Standard Poodle, Husky, Pitbull, Dalmatian |
| Large |
17-18.9 |
29.9-33.1 |
45-85 |
Boxer, Labrador Retriever, Schnauzer, Basset Hound |
| Large |
18.5-20.5 |
34.6-38.2 |
50-100 |
German Shepherd, Bull Terrier, Old English Sheepdog |
| X Large |
20.5-24.4 |
36.2-39.4 |
75-140 |
Rottweiler, Great Pyrenees, Newfoundland |
| Huge |
24.4-28 |
36.4-43.0 |
100-200 |
St. Bernard, Leonberger, Mastife, Great Dane |
