Survival expert Ray Mears is back with a bang this evening, as he launches head first into a study of Australian animals. In the first of two episodes on creatures from Down Under, he's hanging out in the sparsely populated Northern Territory, where saltwater crocodiles are making quite the impression. These lads are increasing in number, and have even been known to make their way into gardens in Darwin. Crikey. Good thing he's meeting some croc-catching rangers, scientists and surgeons who patch up the reptiles' injured victims so...