Developed by Paul Massicot, this Web site provides a searchable database of information on rare, threatened, and endangered mammals from around the world. Users have a number of options for locating information, such as searching by species name (common or scientific) or browsing a list of common names grouped by category (e.g., monkeys). Once found, a species' page will contain a general profile (often including links to pictures), status and trends (such as distribution and IUCN category), relevant biological and ecological data, references, and interesting facts. Users may also find the extensive page of links useful. This Web site offers no visual bells and whistles, but should serve as a helpful online resource for mammalogists and those working the conservation arena.