Alex Hyde / Red fronted brown lemurs {Lemur fulvus rufus} drinking from pool, Kirindy forest, West Madagascar.

Alex Hyde / Close up of fore foot of Red fronted brown lemur {Lemur fulvus rufus}, Kirindy forest, West Madagascar

Edwin Giesbers / Red fronted brown lemur (Lemur fulvus rufus) Madagascar

Thomas Marent / Red Ruffed Lemur (Varecia rubra) portrait, Masoala National Park, Madagascar

Pete Oxford / Red fronted lemur. Female. Madagascar, Kirindy forest.

Bernard Castelein / Red-fronted lemur (Eulemur rufifrons) male, Kirindy Forest, Madagascar.

Bernard Castelein / Red-fronted lemur (Eulemur rufifrons) male in tree, Kirindy Forest, Madagascar.

Bernard Castelein / Red-fronted lemur (Eulemur rufifrons) male in tree, Kirindy Forest, Madagascar.

Bernard Castelein / Red-fronted lemur (Eulemur rufifrons) male, Kirindy Forest, Madagascar.

Bernard Castelein / Red-fronted lemur (Eulemur rufifrons) males on forest floor,, Kirindy Forest, Madagascar.

Bernard Castelein / Red-fronted lemur (Eulemur rufifrons) male in tree, Kirindy Forest, Madagascar.

Mark Carwardine / Red fronted brown lemur {Eulemur fulvus} Berenty Private Reserve, southern Madagascar