Leonardo DiCaprio Instagram – Just four years after researchers identified the Mato Grosso Titi Monkey as its own species, the small monkey has been named one of the 25 most endangered primates in the world. The new report, ‘Primates in Peril 2022-2023,’ launched this week in Mato Grosso, Brazil at the 19th Congress of the Brazilian Society of Primatology. The Mato Grosso Titi Monkey is one of four primate species on the list from Brazil, which is home to more primate species than any other country in the world. The biggest threat to the Brazilian Amazon is deforestation by the cattle industry, both for pastures and feed crops (primarily soybeans), and the Mato Grosso Titi Monkey lives within the largest area of deforestation. Conservationists are now starting to look at how best to mitigate the threats to the Mato Grosso Titi Monkey and develop a plan for its protection, including law enforcement at Juruena National Park, the largest protected area for the species. The biennial ‘Primates in Peril’ report is a collaborative effort of the IUCN SSC Primate Specialist Group, the International Primatological Society and @Rewild. Photo Credit: Leandro Jerusalinsky