General Guide to Choosing a Muzzle
Use string or tape to measure around the dogs' noseband 1-2" forward from their eyes. Put your forefinger under the string to ensure dog comfort - don't tighten the string, it should be free to move. Mark the string where it loops together, flatten it, and measure the length marked.
Miniature Dachshund, Miniature Poodles, Cavalier Spaniels, Yorkies
West Highlands, Jack Russells, Standard Dachshunds, King Charles Spaniels
Springer/Cocker Spaniels, Beagles, Border Collies, Standard Poodles
Labradors, Boxers, Setters, Bull Terriers, Alsatians, Retrievers, Dobermans
Oriental/ foreign short hairs
Long hair, British short hairs and Burmese