he proboscis monkey gets its name from its large, fleshy nose. Both males and females have the large noses. Female noses are not as large, although larger than most monkeys, and juveniles have small upturned noses. The male’s are so large that they hang down over their mouths, reminding one of the old comic, Jimmy Durante. Sometimes they have to push it out of the way before putting something in their mouth. Their noses swell and turn red when they become excited or angry. They also make loud honking sounds as a warning when they sense danger, which make their noses stand out straight. The nose acts as a resonator when the monkey vocalizes.

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