Hylobatidae, commonly known as gibbons, are a family of small apes found in the forests of Southeast Asia. They are known for their long arms and ability to swing through trees, a movement called brachiation. Gibbons are social animals, often living in family groups, and they communicate using a variety of vocalizations, including songs. There are several species of gibbons, such as the Lar Gibbon and the Siamang. They primarily eat fruits, leaves, and flowers, making them important seed dispersers in their ecosystems. Gibbons are currently threatened by habitat loss and hunting, leading to conservation efforts to protect their populations.