Lungless salamanders are the world's largest and most diverse family of salamanders. As their name suggests, none of them possess lungs. Instead they breathe through their skin. To aid this these salamanders usually live in damp and humid areas where the skin can be kept moist.
Scientific name: Plethodontidae
The shading illustrates the diversity of this group - the darker the colour the greater the number of species. Data provided by WWF's Wildfinder.