The red howler species is the most common, but it is often targeted by hunters eager for bushmeat. Other species of howler monkey may be critically endangered over sections of their ranges.

And this is one of the great threats that the howler monkey faces as a species ... dispersing pollen from flower to flower with their mouths and interactions with other species such as falcons ...

For people in the steamy, swampy, jungle-covered state of Tabasco, the howler monkey is a cherished, emblematic species; local people say the monkeys tell them the time of day, by howling at dawn ...