We couldn't live on it and be healthy and neither can they. I know you have been told that it is healthy food but you can't always believe what you see in a commercial. We also know that, just like us, our pets don't get enough exercise and fresh air. Too often pets are trapped in a stuffy lonely house while we are off at work all day. When we finally do come home they absorb our stresses.
Most pets have little physical or social means to get back into balance.
Pets are also deprived in another way. Animals have an inborn love of edible plants, berries, roots and greens. Most are born knowing which plants will cure a stomach cramp, for example. They know which plants to roll in if they have skin parasites. By intuition, they know plants contain vitamin and mineral nutrients.