Males also can reach a slightly longer head and body length, around 20-25ins. Though lengths for females can overlap, they don't seem to reach over 22ins. Mangabeys have long tails - often longer than the rest of their body, which are carried parallel over their backs. Agile mangabeys have a yellowish-gold chest and abdomen. Black mangabeys have pointed crests on the tops of their heads and long, greyish hair on their cheeks.
Sooty mangabeys can have pink faces.
Gray-cheeked mangabeys have throat sacs, which produce their loud call. The males' sacs are larger than those of the females. All mangabeys resemble one another in general build and facial characteristics. Their heads and faces are shorter and rounder than those of macaques. They have white areas above or on top of their eyelids, which are used to embellish facial expressions.