Dog loosing hair please help.
My mother has a dog with hair loss that started around face and over the years the hair loss is his whole back end and hair came back around face but he is bold down his whole back end and skin is pure calised,tough.the vets just say he has allergies and i know a lot of people around here with same problem.the dog has gotten thin and sick looking if this is the problem it is in stage 3 .i want to know what to do for problem.