In this August 2009 handout photograph provided by The Denver Zoo, emperor tamarin monkey twins Lara and Lucy look on from their home in the zoo's nursery. The twins are being cared for by zookeepers after they were orphaned on July 30 when their mother died from cancer, three weeks after giving birth to the pair.(AP Photo/HO, The Denver Zoo, Dave Parsons)
One of the emperor tamarin monkey twins is groomed with a toothbrush by a handler. Zookeepers are feeding the monkeys by hand.
(AP Photo/HO, The Denver Zoo, Dave Parsons)
