Changes in the fecal concentrations of cortisol and androgen metabolites in captive male jaguars (Panthera onca) in response to stress - Morato, R. G; Bueno, M. G; Malmheister, P; Verreschi, Ieda Terezinha do Nascimento; Barnabe, Renato Campanarut (Brazilian Journal of Medical and Biological Research, 2004)