Editing Howler monkey (section)

===Locomotion===
Howler monkeys generally move quadrupedally on the tops of branches, usually grasping a branch with at least two hands or one hand and the tail at all times. Their strong prehensile tails are able to support their entire body weight. Fully grown adult howler monkeys do not often rely on their tails for full-body support, but juveniles do so more frequently. A significant amount of their travel  is done through the ground, with sitting and resting being their most frequent postures.<ref>{{Cite journal |last=Ybarra |first=Miguel A. Schön |date=1984 |title=Locomotion and postures of red howlers in a deciduous forest-savanna interface |url=https://onlinelibrary.wiley.com/doi/abs/10.1002/ajpa.1330630109 |journal=American Journal of Physical Anthropology |volume=63 |issue=1 |pages=65–76|doi=10.1002/ajpa.1330630109 |pmid=6703035 |url-access=subscription }}</ref>