Short Snout Pet Dog Muzzles Adjustable French Bulldog Muzzle Dog Mouth Mask Breathable Muzzle for Anti Stop Barking Supplies This dog muzzle is designed for flat short snout dogs, which can effectively prevent dogs biting, disorderly barking, chewing and eating indiscriminately. How to fit your dog muzzle: 1. Measure under your dog's chin around to right behind the ears. 2.Please your finger under the measuring tape to ensure enougn space for your dog to be comfortable. 3.Fit the selected muzzle on your dog,test the fit by running your finger inside the strap.Your dog must be able to pant and have free tongue movement. Product Detail Item Type: Dogs and Cats