I've recently noticed my 7month Australian Shepherd has smallish mats one behind each ear. I've been working a little each day to comb them out, but it's a slow process since my pup doesn't really want to sit still. I've gotten about half of one out and maybe a third of the other out. Anyways my question is my pup has to be put under anesthesia at the vet tomorrow for surgery. My vet says he could shave out the mats at that time. What's better? Having him shave them out or me just combing them out little by little? My vet said its better to shave it cuz ill have a hard time getting all of the mat out since its right down to the skin. But when he says shave them out all I can picture is my fluffy boy with a naked head. He's not gunna shave a lot right? Or do you think he'll shave a big area! I'm worried.