I have been using this food for almost 5 years and my dogs have been very healthy. It was great with a 4 year old golden and 15 year old terrier mix. Sadly our older dog has passed on but we do have a new puppy. It is so nice to be able to feed the same food to the older dog as well as the puppy and know they are getting the nutrients that they need. his food is fantastic for a multi-dog household!