1. Measure before The muzzle is suitable for small, medium, and large dogs from sizes XS to XXL. Size XS fits dogs with a snout circumference of 7.75 8.75 inches and a snout length of 2.0 inches. This adjustable muzzle is suitable for dog breeds such as Corgi Mix, Husky, Malinois, and Doberman. Please measure twice before . Important note: please choose the size based on the actual mouth circumference and mouth width of the dog. 2. Front opening design Thanks to the innovative design with a front opening, this mesh muzzle is more breathable than other fully closed muzzles and ensures air circulation for your dog. It will not restrict your dog's breathing or cause discomfort. This mesh muzzle also allows you to reward your dog with treats through the front opening. 3. Adjustable muzzle We have equipped the front opening of the muzzle with adjustable Velcro straps, making it easier for you to adjust the fit to your dog's nose shape, ensuring a and comfortable fit. Additionally, this design makes it difficult for mischievous or active dogs to escape the muzzle during outdoor walks. 4. Correct bad habits This dog muzzle effectively prevents your furry friend from biting, chewing, barking, eating poop, licking wounds, and provides protection for your dog and those around you. It offers a safe solution for situations where your dog may display aggressive behavior or needs to move in crowded spaces. With this bite prevention muzzle, your dog can still drink, pant , and receive rewards.