I quite often see dog owners walking their dogs and in some cases, many of them that I see will have a muzzle on their dog which allows them to breathe but prevents them from biting other people or even harming other dogs they see out on their walk. I have always been happy that there are muzzles for dogs as some dogs can get quite excited and can sometimes not realize that they are hurting someone no matter how the owner tries to get them to realize, also when it comes to seeing other dogs, even though someone may be trying to teach and train their dog not to attack other dogs, it can sometimes happen so having a muzzle will protect any other dogs your dog may see.
Have you ever needed to use a muzzle on any of your dogs before? What was your reason for using the muzzle?