Size M-This dog muzzle medium sized dogs is suitable for Dachshund, Poodle, Shiba Inu, etc.(reference only), but not for highly anxious dogs, and flat-faced dogs like Bulldogs. Measure your dog's snout circumference and length as shown in the size chart or the video before choosing the size(The snout circumference is the key to choose sizes). Note: Please DON'T choose size without mesuring! If the snout circumference is between sizes, SIZE UP!Reduce Fear & Escape by Positively Muzzle Training-As a training tool, it's normal that your dog may feel resistant and take this mesh dog muzzle off directly at first serval times. Your dog will gradually adjust by consistent treats rewarding. Be patient and follow the training methods shown in the product page video (or instructions) to help ease your dogs fear and ensure a gradual adaptation. This muzzle is not meant for prolonged use and should always be supervisedMuzzle for Training & Behavior Control-This puppy muzzle is a helpful way to limit dogs biting, chewing, nipping, and other bad habits. This dog muzzles to prevent biting is ideal for Training, Vet visits, Grooming, Walking, Traveling, and Nail Trimming. Please note, the muzzle is a tool that provides restraint but won't eliminate bad habits. Changing your dog's bad behavior requires patience, guidance, and trainingSoft Dog Muzzle to Reduce Burden-This soft muzzle for small dogs is lightweight and easy to carry. The cloth straps and the breathable fabric can reduce the burden on your dog. And your dog can't even feel the existence of the mesh muzzle, which is more acceptable to your dogEasy-adjusting for Secure-The strap connecting to the neck help to keep the muzzle for dogs securely in place, ensuring the dog muzzle for grooming is snug and anti-slipped. And the hook and loop design can be adjusted to the most appropriate size depending on the shape of your dogs snoutNo Restrictions on Drinking & Breathing-The humane design solves the inconvenience of traditional dog muzzles that can't drink water. You can leave proper space for your dogs snout to breathe, gasp, pant, and drink when your dog is wearing this dog mouth guard"