Chimpanzees 'keep their beds cleaner than humans'
The great apes build complex tree nests out of branches and leaves in which they sleep. And they set an example the average human teenager would find tough to follow.
Chimpanzees 'keep their beds cleaner than humans'
The great apes build complex tree nests out of branches and leaves in which they sleep. And they set an example the average human teenager would find tough to follow.