Grandin is a professor of animal science at Colorado State University. She has focused on animal well-being throughout her career. She has been hired as a consultant to the meat industry (animal slaughtering). Grandin recommends "well-designed upright or rotating restraining pens" to hold cattle in a comfortable position. If this is done, 95 percent or more of the animals will stay calm. She thinks from a cow’s perspective to come up with her ideas. For example, she considers the animal’s sensitivity to light and slippery surfaces. She has said that soft lighting and single-colored walls help calm the animals. Also, she has said grooved floors are best, because cows are scared of slippery floors.