Since the fat and protein is much higher than regular dog food. Performance dog food is made for hard working dogs. Dogs that are trained or hunted daily. We feed it to all our dogs that come in for training because the are trained twice a day 5 to 6 days a week and need a food to give the stamina and quicker recovery. There are allot of good performance dog food out there but not all will work with every dog. Most of are dogs are on Diamond seems to work very well with them. 2 of the dogs we have are on Pro Plain Performance. If you only train or hunt 1 or 2 days a week then you really don't need a performance dog food may want to try a dog food for active dogs, They have less fat and protein than performance but a little more than regulate dog food.