Image: Left/Zoologist Devra Kleiman/Right/National GeographicDevra Kleiman helped turn captive breeding into part of a wider conservation strategyThe golden lion tamarin was pushed towards extinction by the loss of Brazil’s Atlantic ForestThe breeding programme had to teach captive animals how to become wild againCaptive-born tamarins eventually became part of the wild populationThe tamarin’s recovery was significant enough to change its conservation statusThe R$20 note turned a conservation success into a national symbolThe recovery is not the end of the story for Brazil’s golden lion tamarin