The ears of the Abert’s squirrel are long and fuzzy, like a shaggy cross between bat and rabbit ears. It’s a cartoonish creature, often gray with a white underside, but the all-black subspecies is ...

For over 25 years, the endangered Mount Graham red squirrel has been quietly battling population decline atop one of Arizona’s tallest mountains. Endemic to the Pinaleño Mountains in Southern Arizona, ...

An endemic subspecies of squirrel that has been in peril for more than half a century is showing signs of population growth in its southeastern Arizona habitat, likely due to a new survey method. The ...