Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for the digestive system.

Our dogs are not overweight, but we use this food anyway, and they really like it. There are 2 main reasons i continue to buy it:1. The dogs never have gas problems, and 2. Their stools are always firm and easy to pick up.Whenever we've tried something else (yes, we used high quality food, switched gradually, and gave them time to adjust) that has not been the case. It gets expensive to feed this food to two 75 pound dogs, so some day we'll probably try again to find a cheaper alternative. But in the meantime, there is an obvious difference in the dogs digestive health, so I highly recommend Nutro Natural Choice Lite.