Desert Iguana (Dipsosaurus dorsalis): The desert iguana thrives in the hot deserts of North America, active at temperatures up to 46°C. It regulates body heat through behavioral thermoregulation, basking in the sun or retreating into burrows. Its light-colored skin reflects sunlight, reducing heat absorption. It excretes waste as uric acid, conserving water. This herbivorous lizard feeds on creosote bush flowers, which provide moisture. It increases blood flow to the skin to release heat and can tolerate higher body temperatures than most reptiles. Its nasal glands help excrete excess salts. The desert iguana’s physiology and behavior make it one of the most heat-tolerant reptiles in arid ecosystems.
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