My Alaskan Malamute has a serious slightly bloody red rash all over the top of his head. If I even graze the top of his fur, he shakes and cries. I recently gave him free run of our dog yard, maybe he got into something? Some kind of thorny bush or rub his head on a poisonous plant or something? We just moved to this property in the late fall so I haven't time before winter to inspect plants trees, although tehre are only 2 or 3 in the run. The other male is out there andat first I thought they could have fought, but I see no puncture wounds. I washed his head and cut the fur down as far as he'd let me. His temp is 103.9, 130 lb dog. He's eating and drinking & moving around fine and active, but I can tell he's in a lot of pain. His eye practically glaze over when I try to treat this large wound. I used peroxide and triple anti-biotic ointment on it. He's really hurting. Can I give him aspirin? What do you think this is? It's pusing yellow too. Can he make it until tomorrow when the Vet opens?