1. Jaguar Hunting in the Mato Grosso and Bolivia;Almeida,1990
2. Azevedo, F. C. C. de, Conforti, V. A., 1999. Predation dynamics of wild carnivores on livestock ranches surrounding Iguaçu National Park: evaluation, impact and implementation of preventive methods. Final Report submitted to Fundação O Boticário de Proteção à Natureza. Foz do Iguaçu, Paraná.
3. The African Leopard: A Study of the Ecology and Behavior of a Solitary Felid;Bailey,1993
4. Countrywide survey of the general public in Wyoming in counties around the park toward wolf reintroduction in Yellowstone National Park. A report submitted to the National Park service;Bath,1987
5. Cougar attacks on humans in the United States and Canada;Beier;Wildlife Society Bulletin,1991