Like many reptiles, they're sensitive to their surroundings ... "In the wild, they're only found in the Sonoran Desert, so it's their low elevation. You're going to find them at 2,000 feet.

These lizards were also easy to find in the wild ... the implications are dire for other species in the Sonoran Desert, where the Mules are located, as they may already be at the upper threshold ...

DESCRIPTION: This lizard is small — roughly 3.4 inches from snout to vent — and very flat and wide with a long, broad tail and a dark stripe running down the middle of the back. Six long, horn-like ...

For those interested in wildlife, Pinnacle Peak Park is home to an array of desert creatures, including Gambel's quail, roadrunners, Chuckwalla lizards, Sonoran tiger whiptail lizards, cactus ...