Why is the emperor tamarin called the emperor?

Answer

Its long, flowing white mustache

The common name, 'emperor tamarin,' was directly inspired by the animal's iconic facial accessory: a long, flowing white mustache that cascades down its chest. This feature is so distinct and prominent that it served as the basis for assigning the primate its royal moniker, setting it apart from less adorned cousins.

Why is the emperor tamarin called the emperor?
animalFeaturePrimatetamarinmustache