Neck Size: 12-14 inches
Breeds: Jack Russel, Terrier, Pug, Maltese etc.
Neck Size: 15-17 inches
Breeds: Cocker spaniel, Border collie etc
Neck Size: 18-21 inches
Breeds: Labrador, Golden Retriever etc.
PAWful hints: Cooper and Sophie can wear a small and a medium. When they wear a medium, I roll the top