The Center for Biological Diversity, Maricopa Audubon Society, and the Mount Graham Coalition sued the U.S. Forest Service and the U.S. Fish & Wildlife Service, alleging that the agencies have failed to “protect and ensure the recovery of the critically endangered Mount Graham red squirrel.” The complaint states the species currently is “the rarest and most imperiled mammal in the United States.” Plaintiffs are seeking declaratory judgment and injunctive relief.