Even the best behaved dog will sometimes need a muzzle.
This flexible plastic basket dog muzzle has a head strap to help prevent the dog from getting the muzzle off.
This muzzle is made for dogs with short wide snouts.
The size 4 muzzle is 14 inches around.
The length on the size 4 is 2-1/2 inches long on the top and 4 inches on the bottom.
The size 5 muzzle is 15 inches around.
The length on the size 5 is 3 inches long on the top and 4-1/2 inches long on the bottom.
Measure the dogs length and circumference of his snout.
Add 1 to 2 inches to the dogs snout circumference.