Nestle Purina Petcare or simply Purina is an American subsidiary of Nestle based in St. Louis Missouri. It produces and markets pet food treats and cat 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 Nestle's Friskies Petcare Company with Ralston Purina which acquired it for $10.3 billion. As of 2012 it is the second-largest pet food company globally (1st being Mars Petcare) and the largest in the United States.