Few species are as widely recognizable as Australia's koala. Despite its iconic status and reams of studies, there is much we don't know about this species and the threats to its survival. As a result, Dr. Danielle Clode chose to explore "why this species is the lone survivor of a once-diverse family of uniquely Australian marsupials."  Her new book Koala: a natural history and an uncertain future (W.W. Norton & Company) released this month examines their behavior, physiology, and complex relationship with the "distinctive" trees upon which they depend. Animal Care Software KONG Zoo Zoo Logic Podcast