University of Wisconsin
University of Wisconsin: Red Howler (Alouatta Seniculus)
Comprehensive discussion on the taxonomy, morphology, range, habitat, and ecology of the Red Howler Monkey in this detailed factsheet that includes an extensive glossary of terms.
University of Wisconsin
The Wisconsin Primate Research Center: Primate Info Net
Information about primates, includes links to primate centers and organizations. Find out about the International Directory of Primatology. Click into "Resources on Primatology" and then "About the Primates" to get to primate-specific...
Other
Young People's Trust: Red Howler Monkey
This informative site presents a number of quick facts about the red howler monkey relating to distribution, habitat, appearance, habits, and more.