I have a dog that is totally not food motivated for reward training etc....
its a bit gross smelling..BUT...buy a liver from butcher,boil with garlic[for smell..yumm] when it seems cooked,,sometimes bit hard to tell but you'll soon figure it out,leave to go completly cold in the liquid. Then cut up either into small bits for instant rewards or bit larger bits-which is what i use,he licks it while i'm holding it and then when he's got the lesson downpat he gets the whole piece...it works every time now......takes a bit of fiddling around but really worth it in the end...wont hurt to at least try it you never know....cheers and good luck. let us know how you get on...need more explicit instructions send me an email
