This dog food works magic! I have an 11 year old pitbull that was struggling to even jump on the couch. When we made the switch to prairie select we noticed a huge change in her energy and health. They both would let our old brand of food sit in their bowls and we would have to dump the stale food back into the bag. When we made the switch we had to separate their bowls to keep them from eating each others food. They love it and it keeps them active. Thank you for such a great product! We will continue to rave to others about this brand and never have to switch again.