There may be times when your dog needs to wear a muzzle. Teaching your dog to wear one and that it's no big deal will help your dog to feel less stressed if they do have to wear one. For example, your vet will love you for it as they will be dealing with your dog when it’s sick, hurt or already scared and therefore more likely to snap. Here's what to look for in muzzles, how to train your dog to wear them and what to say to people who question them.