yah, my dogs get diarrhea from to much liver too, which is to bad cause they love it.
If you have a food dehydrator (or don't mind tying up your oven for at least 6hrs possibly longer) you can dehydrate pretty much any kind of meat you want. I regularly dry bite size peices of beef and chicken (and have done pork, turkey, lamb, venison) as training and general use treats for my two. Thinner, longer peices work better than cubes (they dry faster) and you can always tear them appart if you need them to be smaller. I like them cause they don't crumble or smush and I can shove a handfull in my pocket without worrying about it (they do get gross though if you forget they're in your pocket and put the jeans in the wash....just fyi....)