all of the ippl gibbons belong to the white-handed gibbon species, hylobates lar. both sexes of white-handed gibbons can be either light-colored (ranging from blonde to honey brown) or black. they all have white face rings as well as white hands and feet.

fun fact: "gibbons, particularly white-handed gibbons, were seen as innately adept at circulating and absorbing qi (life force) through taoist practices like daoyin (guiding and pulling). gibbons are featured in taoist poetry, such as the poem, “the remedy” by shih tê, celebrating the joys of seclusion."

• neprimateconservancy.org