we got a black lab and coz it was protictive of its food we got someone in to train him.

anyway if u find something the dog likes (treats) and give one to it, and put another one in ur hand after its et it, and just wait untill it jumps around in exictment for it, then give the dog it and say bark (like ur sayin good boy but bark not good boy). then go over it again, and again about 5 6 times. then put a treat in ur hand and show it to the dog, the dog should sit, lay jump around everything it can think of to get it. but hold out till it barks, and then when it does, say bark in the silly voice like before and continue as before.

dogs are very smart and if u keep at it they should pick it up rather quick, m,y dog picked lay, sit, down, leave, bark etc in about 5 hours and still does it now lol