The Yucatan black howler[1], also called the Guatemalan black howler or Central American black howler, is a New-World monkey native to Central America.
- Dense, rich black fur drapes the entire body of the Yucatan Black Howler monkey, except for a bald spot on the underside of the prehensile tail.
- Everything about them looks elongated, from full faces to skinny fingers. Their tiny eyes are almond-shaped and brown in color, and they have a protruding snout.
- Males have an enlarged hyoid bone located in the anterior midline of the neck between the thyroid cartilage and the chin.
- It may look like they have swallowed a small oval serving plate, which has gotten hopelessly stuck in their throat.
- Like other members of the Atelidae genus, A. pigra has a prehensile tail with prehensile pads.
