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However, the black howler monkey (Alouatta caraya) is a relatively common pet in contemporary Argentina due to its gentle nature (in comparison to the capuchin monkey's aggressive tendencies), in spite of its lesser intelligence, as well as the liabilities of the size of its droppings and the male monkey's loud vocalizations.
The mantled howler has not been observed using tools, and prior to 1997 no howler monkey was known to use tools. However, in 1997 a Venezuelan red howler ( Alouatta seniculus ) was reported to use a stick as a club to hit a Linnaeus's two-toed sloth , ( Choloepus didactylus ), that was resting in its tree. [ 28 ]
This is a result to population declines, habitat degradation, hunting pressure, and disease outbreak vulnerability. [5] Anthropogenic disturbances are the top common reasons for the slow decrease of the black howler population; jeopardizing and degrading their ecosystems for residential and commercial development as well as agriculture. [2]
The Yucatán black howler is the largest of the howler monkey species and one of the largest of the New World monkeys. Yucatán black howler males are larger than those of any other Central American monkey species. On average, males weigh 11.4 kg (25 lb) and females weigh 6.4 kg (14 lb). [6]
The Mexican howler differs from the golden-mantled howler, A. palliata palliata, primarily in aspects of skull morphology, and in some differences in pelage. [3] The golden-mantled howler's range includes parts of Guatemala and Honduras, and it is not clear if the Mexican and golden-mantled howler's ranges currently are in contact. [3]
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 ...
The red-handed howler monkey has one of the smallest ranges of their genus, which makes them even more susceptible to threats. Second, the Trans-Amazonia and the Belém–Brasília Highways intersect their habitats, which causes collisions with automobiles. Third, the threat from agriculture is increasing.
Brown howler monkeys are folivores and frugivorous. The diet of the brown howler monkey consists primarily of leaves and trees. Of the food sources it seems that the genera Ficus, Zanthoxylum, and Eugenia are the most significant types consumed. Brown howler monkeys that live in higher latitudes tend to eat a lower percentage of leaves in their ...