Gibbons are small to medium-sized primates belonging to the family Hylobatidae. They are known for their long arms and agile movements, which allow them to swing gracefully through trees in their tropical forest habitats. Gibbons are primarily found in the forests of Southeast Asia and are often referred to as "lesser apes" due to their size compared to larger apes like gorillas and orangutans. These primates are social animals, typically living in family groups consisting of a mated pair and their offspring. Gibbons are also known for their distinctive vocalizations, which can be heard over long distances. Their diet mainly consists of fruits, leaves, and flowers, making them important for seed dispersal in their ecosystems.