Question for you guys. I have a 9 year old Irish Wolfhound. She had Mastitis a couple months ago. We treated with a round of Keflex which knocked it down but didn't totally get rid of it. We then went with a round of Clavamox (sp). Cleared it up except for some scar tissue in one nipple. Now it is back. I will be calling the vet tomorrow to find out what he wants to do but am wondering if anyone has any experience with this? Does she need to be spayed (hate to do that at her age but it should have been done years ago)? Is another round of antibiotics possible? Any help is appreciated and thanks in advance!