Unifour Natural Pet Foods provides products to help you feed your pet what and how they were meant to eat- a species specific diet. Natural Foods for Healthy Pets!! Unifour Natural Pet Foods began operations on July 1, 2012. We are a small, family owned business. Our 3 dogs, Neenah, Zayla, and Freya play their part by always being on alert to make sure the “dog bell” is ringing long before you get to the door.