They are a special category of foods that are low in calories and dense in nutrients such as vitamins and minerals. (blog.wellnessfx.com)
There are so many different categories of food today — you have super premium, freeze dried, frozen, grain free — it just seems limitless. (petbusiness.com)
A problem feeder is not a picky eater, he might refuse to eat whole categories of foods based on texture. (ourfamilyworld.com)