- World Wildlife Fund (WWF) provides a comprehensive database on endangered species, which includes graphs and charts that illustrate population trends, extinction risk, and other relevant information.
- The International Union for Conservation of Nature (IUCN) also maintains a Red List of Threatened Species, which includes graphs and maps that show the distribution, population trends, and conservation status of various endangered species.
- Various scientific journals and research articles may also include graphs related to endangered animals as part of their studies and findings.
- Governmental organizations, such as the U.S. Fish and Wildlife Service, may publish reports and fact sheets that include graphs on endangered species within their jurisdiction.
- Non-profit organizations dedicated to conservation and environmental protection may also provide graphs on endangered animals as part of their educational resources and awareness campaigns.