I feed Science Diet lamb and rice formula...dumps once a day...firm....tastes like broccoli
Choosing a quality food is important...but I think often times dogs are just plain over fed. I think a common mistake is made thinking that our dogs are a lot more active than they really are. Most dogs I have seen are fat. The vet guidelines for body shape and rib fat is what you should look for. Just like our own bodies...dogs metobalism varies...and so should the intake of food. I have often heard people describe their fat dog as muscular...or big boned...which just like people isn't likely the case
If your dog lacks stamina...it's probably not the food...but lack of exercise.
If you ever have the chance to see a dog sled race...check out those dogs. It's amazing what performance they get out of relatively small dogs.
lt