Unlike other Plant Based Pet Foods, All Evolution diet Pet Foods have all the proteins found in raw meat, poultry and fish.  Dogs, Cats and Ferrets eat fruits and vegetation in the wild, but they also eat other animals.  They do not live as long or in as good a state of health living on a Natural Diet!  Simply put: DOGS, CATS & FERRETS live longer and healthier in a human home setting on an UNNATURAL DIET! If you consider that Dogs, Cats and Ferrets live only about 1 to 3 Years in the wild while eating raw animal flesh and that these same animals live anywhere from 7 to 22 or even more years in an UNNATURAL Human Home Setting on foods that contain some meat and some vegetables and grains, it becomes obvious that they can live much longer and healthier on an UNNATURAL DIET.