This Web site contains the online version of the Merck Veterinary Manual, provided on a not-for-profit basis by pharmaceutical manufacturers Merial and Merck and Co., Inc. This "single most comprehensive electronic reference for animal care information" covers over 12,000 veterinary topics. The scrollable table of contents and advanced search tool allow for quick access to the enormous body of information provided in this site. Users may also view detailed reference tables and over 1200 photographs and illustrations. A short video introduction and a helpful User's Guide will help users take advantage of all available features.