Colobinae is a subfamily of primates that includes various species of leaf-eating monkeys, such as the colobus and langur. These monkeys are primarily found in Africa and Asia and are known for their specialized digestive systems, which help them break down tough plant materials. They typically have long limbs and tails, aiding in their arboreal lifestyle. Colobinae monkeys are characterized by their unique physical features, including a reduced thumb and elongated fingers, which assist in grasping branches. They are social animals, often living in groups, and communicate through vocalizations and body language. Their diet mainly consists of leaves, fruits, and flowers.