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Saguaro National ParkSummer monsoon sunset - Photo by John Williams
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Saguaro National Park
Reptiles
 
NPS
Saguaro National Park
A desert tortoise enjoys fruit from a prickly pear cactus.

Although all reptiles have dry and scaly skin, they are an extremely diverse class of animals. Some are venomous, such as the western diamond-backed rattlesnake and the Gila monster, both found in Saguaro National Park. Other reptiles, like the tortoises and turtles of the desert, have developed hard shells for protection. 

Saguaro National Park is home to some of America’s most charismatic reptiles, including Gila monsters, desert tortoises, Western coral snakes, and six species of rattlesnakes.  Many lizards, including the colorful eastern collared and desert spiny lizards, are active during the day (diurnal). Most snakes and tortoises are most active at night (nocturnal) and early morning (crepuscular).  The “high season” for seeing reptiles is during and after the summer monsoon rains which come in July and August. Visitors are advised that collecting or molesting any wildlife in the park is not allowed.

 

 

 

Desert tortoise with radio transmitter
Small radio transmitters track tortoises
Learn more about desert tortoises by scheduling a field trip
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Gila Monster  

Did You Know?
Gila monsters are one of two venomous lizards in the world. The other is the similar Mexican beaded lizard. Gila monster venom evolved as a defensive rather than offensive weapon.

Last Updated: September 15, 2008 at 16:36 EST