Ralston Purina Company was a St. Louis, Missouri,–based American conglomerate with substantial holdings in animal feed, food, pet food, consumer products, and entertainment. On December 12, 2001, it merged with Swiss food-giant Nestlé's Friskies division to form Nestlé Purina PetCare Company. History Ralston Purina (originally Ralston-Purina) traces its roots to 1894, when founder William H. Danforth established the animal feed company Purina Mills. Danforth formed a partnership with George Robinson; William Andrews entered the business of feeding farm animals by founding the Robinson-Danforth Commission Company. Its predominant brand for each animal was generally referred to as "Chow"; hence "Purina Horse Chow", "Purina Dog Chow", "Purina Cat Chow", "Purina Rabbit Chow", "Purina Pig Chow", and "Purina Monkey Chow". Later, the company began producing cereal, which received endorsement by Webster Edgerly, founder of Ralstonism, to market Ralston breakfast cereals. Edgerly was at the time promoting the consumption of whole-grain cereal. These cereals became so successful that the name of the enterprise was changed in 1902 to the Ralston-Purina Company. In 1986, Ralston Purina sold Purina Mills, its US animal feed business, to British Petroleum. Purina Mills is now owned by Land O'Lakes. In 1994, the Ralston "human food" operations of the Ralston Purina Company were spun off into a new company called Ralcorp Holdings. In 1998, Ralston Purina spun off its international animal feed business as Agribrands, which was acquired by Cargill in 2001. The animal feed businesses continue to use the Purina and Chow brands, which Purina Mills and Cargill license for use in the US and internationally, respectively. Merger with Nestlé Ralston Purina became the subject of an acquisition bid by Swiss-based Nestlé, whose Friskies brand was the other leading US brand of pet food. Nestlé S.A. and Ralston Purina announced in January 2001 a definitive merger agreement. Under the agreement, Nestlé acquired all of Ralston Purina's (NYSE: RAL) outstanding shares for US$33.50 per share in cash. The offer represented a premium of 36% over the closing price on Friday, January 12, 2001. The transaction had an enterprise value of US$10.3 billion ($10.0 billion equity plus $1.2 billion of net debt, minus $0.9 billion of financial investments). Several brands of pet food (e.g., "Meow Mix") had to be divested separately to meet antitrust concerns. Purina brands are now made and marketed by a division of Nestlé (Nestlé Purina PetCare) which is still headquartered in St. Louis. While primarily a pet-food