A Lemur catta, also known as ring-tailed lemur, with its seven-week-old cubs clinging to its back sits...
A Lemur catta, also known as ring-tailed lemur, with its seven-week-old cubs clinging to its back sits on a rock at the Schoenbrunn zoo in Vienna May 10, 2013. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: ANIMALS)