In this Oct. 10, 2012 photo, a golden lion tamarin lounges on a branch during a grooming session in the Atlantic Forest region of Silva Jardim, in Brazil's state of Rio de Janeiro. The

 

              In this Oct. 10, 2012 photo, a golden lion tamarin lounges on a branch during a grooming session in the Atlantic Forest region of Silva Jardim, in Brazil
In this Oct. 10, 2012 photo, a golden lion tamarin lounges on a branch during a grooming session in the Atlantic Forest region of Silva Jardim, in Brazil's state of Rio de Janeiro. The charismatic little monkeys are bouncing back from near extinction just in time to run for mascot of Rio's 2016 Olympics. The recovery effort that raised their population to 1,700 has become an international example of effective conservation, top experts say. (AP Photo/Felipe Dana)