Today all three of my dogs were listless. The only thing that has changed is that they were switched to Innova Evo the other day. I guess that this food just didn't work out for them. What in the food would have caused this?
how long have they been eating the evo? how much of it compared to what you usually feed? evo is quite different from other dry food in composition and nutrient content, so it's possible that they would need some time to adjust.