The Merck Veterinary Manual is a reference manual of animal health care. It was first published by Merck & Co., Inc. in 1955. It contains concise, thorough information on the diagnosis and treatment of disease in a wide variety of species. The Manual is available as a book, published on a non-profit basis. Additionally, the full text can be accessed for free via the website, or downloaded in its entirety via an app. Outside the United States, Canada, and Puerto Rico, it is known as the MSD Veterinary Manual. The content is available in English and Spanish. In January 2020, the website was redesigned with a more helpful search function without advertising. Interactive features on the website include quizzes, case studies, and clinical calculators. In addition, there are animal health news summaries and commentaries. Source: Wikipedia (en)