Once nearly wiped out, wolves are making a powerful comeback in the U.S. From protected parks to remote wilderness areas, these 10 locations are witnessing a resurgence of these apex predators.

The largest wolf, a yearling male, was a bully at 70 pounds or so. The smallest, the runt of that year’s litter, was hardly bigger than a throw pillow, her eyes lined in black. A pair of ravens ...