An exploration of how native creatures have adapted to survive in the human environment. In Melbourne, tree-dwelling possums have taken to sharing trees in city parks, risking encounters with traffic and cats. In Brisbane's parks, over the past 150 years of so, eastern water dragons have become twice the size of their wild cousins and without trees to climb their limbs are getting longer and claws shorter. Beyond the cities, dingoes eek out an existence in the inhospitable environment of a desert goldmine, while climate change and deforestation is posing a threat to koalas. Narrated by Barry Humphries. Last in the series.