Visit your Gillette, WY Petco Animal Supplies for all of your animal nutrition and grooming needs. Our mission is Healthier Pets. Happier People. Better World. Located at 2610 S. Douglas Hwy, Petco focuses on nurturing the powerful relationship between people and pets. We do this by providing the products, services, advice and experiences that keep pets physically fit, mentally alert, socially engaged and emotionally happy. Petco provides a variety of nutritional needs for your pets as well as grooming, adoption, and training services. Visit your local Gillette Petco Animal Supplies today.