Share 'Lethargic setter'

Murfee is a beautiful 15 month old setter he is on a natural raw food diet and has a beautiful shiny coat.  However we have noticed that he is quite lethargic particularly a.m. and we have to drag him out for a walk particularly when going in car while we are out he's fine and running about but tired after a walk (usually an hour).  He's been prescribed Sulphur to take for a couple of days (not y…