As wild burro populations grow, they're putting native vegetation at risk, a new study shows, including the saguaro cactus.

While the Grand Canyon's "grandness" usually overshadows most of the state's other outdoor attractions, Arizona has plentiful natural wonders just as worthy of a visit. Among Arizona's public lands, ...

As the trail wound its way into Arizona's Sky Islands, the region's biodiversity was on full display, as were the threats from rising temperatures.

When desert animals face environmental extremes day in and day out, every unique anatomical feature can aid in their survival ...

The Yarrow's spiny lizard lives in a narrow band of the Mule Mountains, but its numbers are declining as temperatures warm ...

Arizona is home to over 800 native animal species, ranging from well-known rattlesnakes and javelinas to rarer creatures like ringtails and jaguars. Arizona also boasts unique species like the ...

According to the Arizona-Sonora Desert Museum, bobcats are known predators of rattlesnakes, but they are not immune to their venom and could die if they're bitten. An Arizona woman captured a short ...

Cruz, the Arizona-Sonora Desert Museum's resident mountain lion for more than a decade, was humanely euthanized Thursday. He ...