Re Hair Loss My 4 yr old male recently had male pattern baldness on his back end. The vet did all kinds of tests, which were inconclusive. Since there was no evidence of fleas or excessive scratching, and he get excellent food (Iams kitten chow and linetone), it was 99% for sure he had an adrenal gland tumor. The vet wanted to try a cortizone injection, just in case it was a skin allergy of some kind. It was a miracle! His fur grew back immediately and he's much happier now that he feels handsome again. Dede [Posted in FML issue 1895]