It is a member of the howler monkey genus "Alouatta". Clearly recognizable are the figures of Hunahpu, Xbalanque, and the howler monkey scribes and sculptors. The black hawk eagle is a predator of the brown howler monkey. Geoffroy's spider monkey is the next largest, followed by the howler monkey species. The diet of the brown howler monkey consists primarily of leaves and trees. This subspecies of howler monkey is known to be a frugivore and a behavioural folivores. The howler monkey is native to the region. The jawbone of the red howler monkey is large, especially the body of the mandible. The musical Elder Brethren correspond to the Howler Monkey Gods of the Classic period. The golden-mantled howler differs from the Mexican howler monkey primarily in aspects of skull morphology. Geoffroy's tamarin, howler monkey, white-faced capuchin and common opossum are captured less often. The mantled howler monkey is a mainland species stranded by the rising sea level. In the corresponding Maya calendar, Howler Monkey (Batz) is substituted for Spider Monkey. Saguinus geoffroyi, Azuero Howler Monkey, Azuero Spider Monkey, Western Capuchin Monkey and Golden-mantled howling monkey.