Add Yahoo as a preferred source to see more of our stories on Google. Now, the monkeys have taken their shenanigans a step further. They have been caught doing something that scientists had never seen ...

Part I. Introduction. 1. Why is it important to continue studying the behavioral ecology and conservation management of howler monkeys? / Martín M. Kowalewski, Paul A. Garber, Liliana Cortés-Ortiz, ...