Scat-sniffer (IMAGE) Washington University in St. Louis Caption Washington University in St. Louis researcher Karen DeMatteo and scat-sniffing research dog 'Train" are on a mission to preserve habitat corridors for jaguars, pumas, bush dogs and other endangered carnivores in the forests of Argentina. Credit Courtesy of Karen DeMatteo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.