We brought our Guinea Pig home from the pet store 3 weeks ago. Unfortunately he was infested with mites and lice, which we did not realize until a week later. We noticed a few scabby spots on his back and some "dandruff" which ended up being the lice. After a $65.00 vet visit and an ivomec shot the mites and lice are dying off. But he now has big bald patches on his back. Does anyone know if the hair will grow back? The poor little guy! He is much happier now that he isn't scratching constantly. I raised all kinds of heck with the pet store and they did offer to cover my vet bill. All their animals are supposed to be vet checked before sale. Hmmm...I guess lil' Porky must have slipped right past the vet that day. Anyway, just wondering if I'm going to have to invest in a Piggy hairpiece to cover his naked spots. LOL.