For more than 100 years, Purina has been revolutionizing pet food production, and its ability to enrich the lives of pets everywhere. By 1956, mastering new production techniques, we literally reshaped pet care, introducing Dog Chow® as the first extruded dry food. We’re still at it today, with Tidy Cats®, the lightweight cat litter champion of the world and the leader in our category. Such leadership requires constant innovation and renovation, which is so often rooted in our world-class food production standards.