Quote Originally Posted by lv4dogs
Does she happen to eat out of plastic bowls? That could be part of the problem thats causing the irritation around the mouth. It's very comon for dogs who eat out of plastic to get allergy/pimple type symptoms on the muzzle.
I was going to ask this same question. Plastic is a big no no for dogs. It holds bacteria that cause problems such as what you are seeing around your dogs mouth. Switch to stainless steel bowls for both feeding and drinking and make sure they get a good soapy water clean out at least once a week (or more).

My Dusty was allergy tested. I'll write more about it tomorrow as I am being called in a different direction now by my human kid.