We have an 11month old lab. We have had him about 5 months. He was perfectly fine and had a great coat. We have been to the vet 3 times and no closer to knowing what is going on. When we first got him we lived in a home with hardwood floors,our new place has carpet. We have fed him the same food from the start. We used to let him swim everywhere but we stopped that after going to the vet to find out he had a really bad skin infection. The vet seemed to think that because the infection was really bad that the hair would regrow once that was cleared up. So we are on our 2nd round of temaril-p with 1000mg of cephalaxin(sp) a day. The vet flat out said they didn't know what was going. They first said food allergy so we switched him to Taste of the Wild dog food which is grain free,and no change. The next thing is they want to do an allergy test to see if he is allergic to carpet or what or they talked about doing a bio. on him to see if it is his thyroid( though they said it would be a rare thing because it isn't common in dogs this young). I feel like we are just stabbing in the dark. Our guy without the Temaril is itchy but fine with it. We asked if we kept him outside most of the time and then crate him when inside would that show if he was allergic to the carpet and they said no,so I don't understand. If he isn't laying on it wouldn't the hair come back if he was allergic. His hair loss is only on his belly and from hip down on his back legs. We are also using a special shampoo and oatmeal conditioner on him. The skin doesn't appear to be red but it does seem dry. We are also giving him salmon oil to help.