Muzzles are sometimes used on trained and untrained dogs, large or small, to prevent unwanted biting, scavenging, or wound licking. They can also be used on dogs who display aggression, whether motivated by excitement, fear, or prey drive. Muzzles are also used on dogs when there is a risk of them taking baits that have been laid for vermin.
Muzzles can also be used on racing dogs and working dogs (military, police, security, etc.).
They are usually made with a strong buckle or other fastening device to ensure that they do not come off accidentally. The most suitable materials for dog muzzles are leather, nylon, plastic and others. The most comfortable muzzles for dogs are those with wire cage construction. Muzzles of this kind give enough freedom for a dog to eat, drink and freely pant.