Caged Lemur

Lemurs are generally the most social strepsirrhine primates, living in groups called troops.

This lemur in a cage was photographed at the Duke Lemur Center in Durham, North Carolina, which houses nearly 250 lemurs and bush babies across 12 species—the most diverse lemur population on Earth outside their native Madagascar.

Caged Lemur

Baboon Fellow Grooming

Grooming is indeed a valuable commodity in itself, likely due to its stress- and tension-reducing effects. Primates also groom socially in moments of boredom, and this act has been shown to reduce tension and stress.

One hamadryas baboon is grooming another at the North Carolina Zoo.

Fellow Grooming