try a frozen raw egg... peeled... most dogs love it as a treat! but served all slimy, uughh, most dogs prefer it mixed into other goodies...
just know that raw digests about 3 times faster than kibble, if that can help you plan your meals?... so if you feed at 9am and 6pm (for example) then i would do raw in the morning and kibble at night. but if you feed at 6am and 9pm, i would do the opposite... make sense?