Its hunger. As part of the digestive process, the stomach spamodically contracts and relaxes, in order to thoroughly mix the digestive juices with the food. If the stomach is empty, then the stomach wall rubs against itself, producing that growling sound. So, in fact, its the same noise your stomach makes when you are hungry....solution? Adjust the doggies feeding time/quantity/frequency as you are letting him go hungry.
68 mths ago