increasing tourism. The researchers also polled a group of people in Pilar regarding the conservation of black howlers in the area as part of their research. As a result, domestic dogs attacking black howlers in urban areas, electrocution on uninsulated power lines, and people killing the monkeys were all recognized as threats. Because the power lines are commonly utilized for transit by the black howler monkeys, three howler fatalities by electrocution were documented during the research period. As mentioned in the article, efforts for the conservation of the black howlers in Pilar are minimal, but if urbanization keeps rising, it may pose serious dangers to their existence by diminishing accessible trees and pushing howlers to walk on power wires or on the ground more. References black howler Mammals of Argentina Mammals of Brazil Mammals of Bolivia Mammals of Paraguay black howler Taxa named by Alexander von Humboldt