Cissy, a Sumatran orangutan mother, takes a nap in her daytime nest. — Photo: Natasha Bartalotta/Max Planck Institute of Animal Behavior/dpa
Orangutans, just like humans, also need to compensate for lost sleep with naps, according to new research. Watching them snooze was no easy task for researchers, they say.
When we humans don't get enough rest at night, the next day we feel the strong urge to take a nap. It turns out that orangutans are no different.
