We have a lovely collie, but she can be very territorial and reactive when we're out and around people (she's cute so often people rush up with their hand stuck out when she's on lead and she does a very aggro bark, and has nipped in the past if very startled).
Considering whether to get a muzzle, and whether it might work for our peace of mind in this kind of situ? Obviously we don't often take her into very busy places, but there have been times where even if we were just walking locally and someone approaches too quickly and she makes a loud lunge for them (I have to stress, shes never gone for anyone aggressively).
Has anyone got any advice on whether a muzzle would be helpful for this? Was thinking it might even just work to deter people from trying to touch her?