Is a veterinarian, with a Master’s and Ph.D. from the University of São Paulo - USP. He is a researcher with wild carnivores since 1992. He is an Environmental Analyst at the Chico Mendes Institute for Biodiversity Conservation, and is head of the National Research Center for the Conservation of Natural Predators - CENAP/ICMBio since 2005. Coordinates and participates in the preparation of action plans for conservation of mammals, order Carnivora, threatened with extinction and the list of endangered species of Brazilian fauna. It has experience in veterinary medicine, with emphasis on animal reproduction, medicine, conservation and management of wild animals. Currently dedicated to the study of animal movement aiming to understand influences of landscape changes in the use and selection of resources by large mammals.