Largest desert in North America

Javelina near Dog Canyon in Big Bend National Park.  Photo by Rick LoBello

The Chihuahuan Desert is not only the largest desert in North America, but also the most biologically diverse.   In addition to the pages of chihuahuandesert.org you can learn a great deal about this desert on the World Wildlife Fund website.    WWF has done a great deal to help people focus on this conservation hotspot.
A 376 page biological assessment is also posted on their site.