Our advantage: 1. competitive price 2. considerate service 3. high quality products 4. professional team Size UsageCircumference of the small is 7-1/2” For Minature Poodle,Bichon Frise,Minature Schnauzer,Shelties,Yorkies,Cavalier Spaniels&other Miniature Breeds with similar size snouts. Circumference of the Medium is 9-1/2” For Small Beagles,Fox Terrier,Keeshound,Whippets,Westirs,Jack Russels, ...