01/04/2026
On second thought, maybe those New Year’s resolutions can wait… 😴
: White-handed gibbons have built-in sitting pads! Known as “ischial callosities,” these sitting pads cover the protrusions of their hip bones on their buttocks and are made up of layers of thick, hardened, and hairless skin.
Alt-text: Chanee the white-handed gibbon leans back against a rope as she sits and suns herself on the bridge leading to Gibbon Island.