A Lemur catta, also known as ring-tailed lemur, with its three-week-old cub clinging to its back sits...
A Lemur catta, also known as ring-tailed lemur, with its three-week-old cub clinging to its back sits on a tree at the Schoenbrunn zoo in Vienna April 4, 2014. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: ANIMALS)