A gray fox perches on a log in Ohio. Within the last four years, Iowa, Illinois, Indiana and Ohio have launched gray fox studies to find out why numbers have declined and what may help the species rebound. Photo courtesy of the Ohio Division of Wildlife. (Courtesy of Ohio Division of Wildlife)
Gray foxes are the only North American canines that can climb trees. Now, biologists in four Midwest states are trying to figure out why gray fox populations are on the wane.
