Ensuring you have the correct size is vital. Always try the muzzle on your dog to ensure the right fit. The nylon muzzle should be snug, but allow you to insert a finger between the muzzle and your dog's skin. If your dog is prone to biting, always ensure someone is there to assist you to stay safe while fitting the muzzle. Emphasize praising and rewarding your dog while wearing the muzzle to build positive associations and prevent your dog from avoiding it.