My blue Swedish duck was bit by something this afternoon while he was in the backyard. I think it might've been a cat, but I'm not sure. The injury is on his beak and it's just a little indent that looks like it bled a little but has stopped. Just wondering if it is painful to him? He's still drinking and eating and seems normal. Should I give him any kind of pain medicine or wash off the wound? I put a picture up.