Introduction to the mandrill: The mandrill has a large and long head. There is a bony protrusion on each side of the nose bone. There are ridge-like protrusions arranged longitudinally on it, with grooves in between. It is covered with green skin on the outside and bright red between the ridges. It likes to inhabit dense tropical rocky areas and is mainly produced in central and western Africa, Congo, Gabon, Nigeria, Cameroon, Equatorial Guinea and other countries.