What about the case of the Panamanian Golden Frog? I saw this animal, filmed for the last time in the wild on the BBC's 'Life in Cold Blood'. The reason for it's extinction in the wild was from local collecting (the frog is thought to be lucky) and mainly because there was a naturally occurring fungus that was killing amphibians in the region.
The last of these amphibians had to be collected and taken into captivity for their own protection or we would never see this beautiful frog again.
Denver Zoo: Conservation: Projects
In collaboration with the Amphibian Recovery Conservation Coalition and the Houston and Denver Zoos, researchers are helping build the El Valle Amphibian Conservation Center in central Panama.