Merck Veterinary Manual This link opens in a new windowMerck & Co., Inc., has a long history of providing medical information to both human and animal health care professionals. For more than 60 years, the Merck Veterinary Manual (MVM) has provided veterinarians and other animal health professionals with concise and authoritative information on diseases and management of food-producing, companion, laboratory, and exotic animals. The new 11th edition in print and the expanded content on this site carry on this proud tradition. The contents of the MVM are also available as an app for handheld devices, providing enhanced capability to quickly access needed information.