BARKLESS Dog Muzzle, Basket Muzzle Anti Biting Chewing, Sturdy Lightweight Cage Mouth Cover for Small Medium Large Sized Dogs, Allows Panting Drinking, Suitable for Grooming Trimming TrainingPLEASE MEASURE BEFORE BUYING: Snout circumference and snout length must be measured both. If the circumference fit one of the sizes in the size chart, but the length is over the maximum range of this size (about 1 inch), you should choose the next size for a better fit. For long snout dogs like Doberman, please make sure the dog's snout length fits the size DESENSITIZING YOUR DOG TO A MUZZLE: Please watch our instructional video if you've selected the