Petmate ASPEN PET PRODUCTS 27252 Large Adjustable Dog Muzzle, Black Comfortable, easily adjustable muzzle lets your pet pant and drink This comfortable, easily adjustable muzzle is constructed of a breathable mesh material with a quick snap closure to make muzzling easier. A muzzle is a safe &amp; humane way to handle dogs that are aggressive or injured It prevents biting, chewing, &amp; barking without catching hair or causing pain