Sanje mangabey[1], also called the Sanje crested mangabey and Sanje River mangabey, are Old World Monkeys endemic to Tanzania, a sovereign state in East Africa.
- They are found only in the Udzungwa Mountains of Tanzania and live on the eastern slopes at various elevations from 1, 312 to 4, 266 feet (400 to 1, 300 m) above sea level.
- Sanje mangabey is a medium-sized monkey. The sexes look alike, but the males are slightly larger than the females.
- The muzzle is gray, while the skin on the rest of the face is grayish or pinkish with a bluish edge to the hairline.
- The eyelids and the area under the eyes are particularly pale. The hair on the Crown is longer than elsewhere and tends to have a parting or a slight swirl.
- The hairs on the back, sides, and limbs have creamy gray bases and dark gray shafts edged in yellowish-orange and black.
- The hairs on the underside are long and pale yellowish-orange. The extremities of the limbs, as well as the hands and feet, are dark gray.
- The bare skin under the tail is bluish-gray with a pink tinge, and the calluses on the ischium are pink. The long gray tail has a longer tuft of hair at the tip.
