Nutro develops several different diet formulations, including canned, soft foods as well as bagged, dry kibbles. They have "MAX CAT" and "Natural Choice" lines for cats, and the "Nutro Max", "Natural Choice", and "Ultra" lines for dogs. Each line has a selection of flavors and formulations for age range. The "Ultra" line was specifically created with the intent of creating a high-end holistic dog food.
Their dry foods are made through an extrusion process, and packaged with vitamin e as a natural preservative.