Our boxer puppy is 8 months old. We bring her to daycare once a week for socializing. Everytime she comes back we check her for scratches and she is good. The next day her neck has matted fur with crust yellow patches on skin. This eventually flakes off and we learned our lesson not to pick it off because it makes her bleed or bald spot. Is she possibly allergic to another dogs saliva? Anyone else have this issue?