Black howler

This species is sexually dimorphic, with adult males having entirely black fur and adult females and babies of both sexes having an overall golden colouring; which emphasizes black-and-gold in the name. The IUCN Red List has classed the black howler as Near Threatened as a result of a recent population reduction due to a variety of human-caused factors. The black howler is one of nine species of the Alouatta genus that have been identified and is in the Atelidae family. Because of this species' sexual dimorphism, the taxon for the black howler has been distinguished. Black howlers are sexually dimorphic, the male and the female are distinguishable due to the difference in their fur coatings. As the male black howler grows older, his fur will change from a golden colour to a complete black fur coat. The female, as well as infants of both sexes, have fur of a golden tone. Female howlers are lighter in weight than males, who are 47% heavier.