Cottonwood Trails Closed
Trail access remains closed to Cottonwood Spring Oasis, Lost Palms Oasis, and Mastodon Peak. More »
Pinto Basin Road Under Construction; Expect 30+ Minute Travel Delays
Visitors should expect 30+ minute waits when heading north and sound bound on the Pinto Basin Road. Due to construction activity around Cottonwood Visitor Center, additional waits of 30 minutes may be in place when leaving the visitor center parking lot. More »
Deteriorating conditions of Black Rock Canyon Road
The road leading to Black Rock campground has deep potholes, is deeply rutted, and can be difficult to negotiate, especially in large vehicles. Please drive with caution.
Viewing wildlife is often a priority for visitors to national parks. Arguably the most conspicuous critters abroad in the daytime in Joshua Tree National Park are the lizards. Wherever you go in the park, spring, summer, or fall, you are likely to see lizards. In spring, they are especially abundant.
Lizards are made for desert life
There are two basic lizard lifestyles
Each community has a large herbivorous lizard. On the desert flats it is the desert iguana, in the rocky areas it is the chuckwalla. This finely tuned division of resources is common in communities with many species. Even though the lizard communities of North American deserts are simple compared with those of Australia and South Africa, this complex partitioning of resources among finely adapted species is apparent here.
When active, most desert lizards maintain a body temperature that is favorable for metabolism by basking in the sun until they reach about 95° F. It is this practice of basking that makes lizards a conspicuous part of the desert scene. Most desert lizards feed on insects, but our two largest-the chuckwalla and desert iguana-eat mainly flowers and leaves.
Many of the smaller species of lizards have special "break points" in the tail bones. The tail beyond these points can be discarded in an emergency, such as being seized by a predator. They are then able to grow a new tail over the following weeks, although the regenerated tail is usually smaller and plainer than the original.
For the opportunity to see the largest of our lizards, the western chuckwalla, drive along Pinto Basin Road, slowing where it passes through areas with rocky outcrops. Although they are much less numerous than they were 40 years ago, you might just catch a glimpse of a large (12 inch), heavy-bodied lizard sitting near the very top of an outcrop.
Park chuckwallas are very wary, and can seldom be approached closely. Please don't disturb them. They need to bask in the sun in order to absorb the heat necessary to digest the plants they have consumed.by Dr. Harold De Lisle, herpetologist
Did You Know?
Joshua Tree is crisscrossed with hundreds of faults, and is a great place to see raw rocks and the effects of earthquakes. The famous San Andreas Fault bounds the south side of the park and can be observed from Keys View. More...