1. The body is relatively large, the limbs are very long, and the tail is also very long, exceeding the length of the body, the main color of the hair is black, the cheeks are gray, and the hair on the head is erect;

2. Mainly live in groups, there will be a hierarchical system inside, like climbing trees very much, and likes to move on cliffs, the scope of activities is relatively wide, they will come out during the day, and in the morning and It is more active in the evening;

3. It mainly eats some leaves, fruits and twigs, and occasionally eats some small animals.