Could something be messing up his sense of smell? Lack of proper smell kill's appetite in dogs.
Eileen Morgan The Mare's Nest http://www.enter.net/~edlehman --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.419 / Virus Database: 235 - Release Date: 11/13/2002