A couple of years ago, a group of entrepreneurs successfully Kickstarted a little something known as the Chameleon Pen. In a nutshell, it's an art pen that changes color tone as you draw – for example ...

Almost half of the world’s chameleon species live on the island of Madagascar. This chameleon community is not only the world’s largest, it is also the world’s most unique; with 59 different species ...

Flashy feathers and extravagant fur are the Ferraris and Rolex watches of the animal kingdom. Males use these over-the-top features to attract females and send a status message to competitors. Just as ...

This story appears in the September 2015 issue of National Geographic magazine. For sheer breadth of freakish anatomical features, the chameleon has few rivals. A tongue far longer than its body, ...