PHOENIX - The U.S. Fish and Wildlife Service issued an emergency permit Thursday allowing researchers to capture and conduct DNA testing on a creature seen near the Grand Canyon that resembles a gray wolf.Gray wolves are protected under the Endangered Species Act, which ordinarily prohibits the capture of individual animals in the wild without a special permit that is accompanied by 30-day review period.A notice published in the Federal Register called the move "essential for its safety" and said the creature would be released back into the general area where it is captured.