The mantled howler is diurnal and arboreal. Like other species of howler monkeys, almost all mantled howlers have full three color vision. However, the mantled howler is a relatively inactive monkey. The next two enclosure houses a pair of tufted capuchins and mantled guerezas. The mantled howler is usually indifferent to the presence of humans. This region is also the northernmost extent of the primate Alouatta palliata, or mantled howler. If it survives infancy, the mantled howler's lifespan is typically 25 years. Visually, the somewhat subdued and mantled appearance suggests a substantial regolith. The mantled guereza lives in both deciduous and evergreen forests. Leaves make up between almost 50% and 75% of the mantled howler's diet. As a result, only about 30% of mantled howler infants live more than one year. Eventually, the lava cover was mantled by thousands feet of sediments. The mantled guereza is distributed throughout Equatorial Africa. The mantled guereza has a polygynous harem-based mating system. The geographical range lies south of that of the mantled guereza.