Nestlé Purina PetCare. Nestlé Purina Petcare is a St. Louis, Missouri-based subsidiary of Nestlé. It produces and markets pet food, treats and litter. Some of its pet food brands include Purina Pro Plan, Purina Dog Chow, Friskies, Beneful and Purina ONE. The company was formed in 2001 by combining Ralston Purina, which was acquired by Nestlé for $10.3 billion, with Nestlé's Friskies Petcare Company.