To answer all your questions, Bruce is around 4 or 5 and I use puperoni as treats. I think I need to find something like jakienmutts said but the only problem is my dog is really picky! Any suggestions?
You can use all kinds of things: I use things like chicken, hot dogs, cheese, Jenny-O meatballs (in the frozen section of the grocery store, I cut them up into small bites, the dogs go nuts!!). You can also use things like beef heart, liver, or tripe. You can look in the refrigerated "dog section" in the grocery store, there are packaged treats called Dog Joy that the dogs also go nuts over - I get those occasionally as a real treat, I cut them up into small bites also. Packaged treats like Pupperoni are fine but honestly, not a real high value. Switch over and offer something someone here has suggested and see what reaction you get. Oh, when I make the chicken for the dogs, I often will sprinkle it with garlic powder, make it good and "stinky" (in a good way) - you want something that smells really good, too.