The Mount Graham red squirrel population in Arizona has risen more than expected, according to the Arizona Department of Game and Fish. The latest survey shows an increase of about 89 squirrels ...

Soft diet, weak jaws. If red squirrels eat too many peanuts, their jaws end up weaker than the jaws of squirrels eating natural diets, researchers report January 15 in Royal Society Open Science.

TUCSON, Ariz.— The Center for Biological Diversity and Maricopa Audubon sued the U.S. Fish and Wildlife Service today for failing to protect habitat essential to the survival and recovery of southeast ...

Conservation groups have sued the Biden administration to force two federal agencies to comply with the Endangered Species Act and protect imperiled Mount Graham red squirrels in southeastern Arizona ...