Hey there. I have had my two guinea pigs for over three years. Today while petting them I noticed both of them have these bald patches on their sides. I am only 15 and take care of the gp all by myself so I am really freaking out right now. I don't think I can afford to go to vet but I am willing to try if the problem is serious. I read that this might be the cause of ringworms or mites but I just wanna be sure before I do anything. Please please help me out.