SENIOR FOOD??

Well, Sunyr went to the vet this week for her yearly exam, and I am happy to say that everything went well. She did, however gain a few pounds. She really doesn't eat that much and the vet didn't think so either, but she said that in the winter months, dogs don't usually get the same amount of exercise either. I take them on four walks a day, which are usually 15 minutes to a half an hour long. I am thinking of changing her food and that maybe that would make a difference. Any suggestions on a good senior food for her?? I really appreciate your help!!! Thanks.