The International Union for Conservation of Nature and Natural Resources' Red List provides an inventory of the conservation status of plant and animal species worldwide. The above chart was sourced from the Red List's 2010 tally of total endemic and threatened endemic species in each country, and shows the 10 countries with the highest number of threatened endemic species — those that occur naturally within the home country.
This chart comes from the Ujima Project, a program at the Center for Public Integrity. The project includes a collection of databases, documents and other resources that aims to bring transparency to the workings of governments, multinational non-governmental organizations and business enterprises in developing countries. For more on the project, visit ujima-project.org.