They are called sky islands. Tall mountains surrounded by a “sea” of desert, yet, almost literally, not a drop of water to be ...

If you've ever wanted to catch a glimpse of bighorn sheep in the wild, you may want to check out these two viewing events ...

Some animals are known for their ferocity and unrelenting aggression. These top 10 most aggressive animals on Earth are ...

The most venomous snakes in Arizona include rattlesnakes, sidewinders and coral snakes. Here's where they live and how to ...

With more than 1,200 square miles of land area, U.S. Army Yuma Proving Ground (YPG) is the fourth-largest installation in the ...

Conservation efforts at the Phoenix Zoo and Southwest Wildlife aim to protect endangered species like black-footed ferrets ...

A new study finds that Arabia was once a green corridor of rivers and lakes, enabling animal and human migration between Africa and Eurasia over the past 8 million years. A new study published in ...

Reptiles in open habitats evolved brighter colors over time. This helped them reflect sunlight and survive climate change.

High snow and endless fences made for a lethal combination that researchers and wildlife advocates are working to change.

Steve Lake envisions a zoo no more than 25 acres, with animals that could withstand the region’s extreme summer temperatures.

The freeway, and nearby development, have essentially trapped populations of cougars, mule deer, bobcats and desert ...

Scientists found a “pygmy” creature with “leaf”-like toes in rocky a crevice of South Africa and discovered a new species, a study said. Photo from Courtney Hundermark via Conradie, Hundermark, Kemp ...