Enrique Lopez-Tapia / Common brown lemur (Eulemur fulvus) and Red-fronted brown lemurs (Eulemur rufus) in tree, Andasibe-Mantadia National Park, Madagascar.

Konrad Wothe / Rufous Brown Lemur (Eulemur rufus) male climbing tree, Andasibe Mantadia National Park, Madagascar, Africa

Nick Garbutt / Red-fronted brown lemur (Eulemur rufus) female, sitting on forest floor with tourist in background taking photograph, Kirindy Forest, Madagascar.

Nick Garbutt / Red-fronted brown lemur (Eulemur rufus) female, portrait, Kirindy Forest, Madagascar.