The singing of the female Kloss's gibbon is considered the most beautiful of all the gibbons' songs.

The reproductive cycle of Kloss's gibbon is similar to that of other gibbons.

Kloss's gibbon exclusively lives on the Mentawai Islands that lie to the west of Sumatra.

ARKive - images and movies of the Kloss's gibbon (Hylobates klossii)

Unlike most other gibbon species (except for the Javan silvery gibbon, Hylobates moloch), Kloss's gibbon males and females do not sing duets.

Kloss's gibbon (Hylobates klossii), also known as the Mentawai gibbon or the Bilou, is a primate in the Hylobatidae or gibbon family.