I have done my fair share of reading about this subject and
belly, leg, and
, along with paw chewing are common symptoms of allergies, possibly from food. My dog gets really bad rashes in her ears and tries to scratch her back, but she is allergic to tons of stuff (grass, beef, fish meal, soy, flax, and weeds to name a few). The most common food allergies in dogs are wheat and corn (Nutro lamb and rice will work for these types of allergies).