Knob-tailed or kidney-tailed geckos are so named because their tails often end in a small round lump.
Scientific name: Nephrurus
The shading illustrates the diversity of this group - the darker the colour the greater the number of species. Data provided by WWF's Wildfinder.
The Knob-tailed geckos can be found in a number of locations including: Australia. Find out more about these places and what else lives there.