|Abstract: The Hoary fox (Lycalopex vetulus) is one of the seven less-known canid species in the world, considered a research priority by the Canid Specialist Group (SSG/IUCN). Endemic to the Brazilian Cerrado Biome, it's survival is specially threatened by anthropogenic factors and the lack of knowledge. The main goal of this project is to raise basic ecological data on the hoary fox and to identify the threats to the species survival in the fragmented Brazilian Cerrado. The work will be carried out in the Southeast of Goiás State, municipality of Cumari, and will utilize complementary methodologies as radiotelemetry, camera trapping, direct observation, and scats analysis. Data obtained will support a population viability analysis (PVA) and also assist a National Canid Action Plan, a management plan for species survival throughout Brazil. Papers on the fox natural history will be published in periodicals, sharing the information with other interested on biodiversity´s ecology and conservation.