Roberto Ibanez, a zoologist at the Smithsonian Tropical Research Institute in Panama, collects Toad Mountain harlequin frog tadpoles in a rock stream pool on the slopes of Cerro Sapo March 28, 2011. The endangered frogs are likely to be wiped out in the wild by the imminent arrival of frog chytrid, a fungus that has decimated amphibian species across the globe in recent decades. Panama's Cerro Sapo is one of the few regions still partly free from the fungus. Picture taken March 28, 2011. To match feature PANAMA-FROGS/ REUTERS/Sean Mattson (PANAMA - Tags: ANIMALS ENVIRONMENT)