From this story in the San Francisco Chronicle:
_Tens of thousands of gray wolves would be returned to the woods of New England, the mountains of California, the wide open Great Plains and the desert West under a scientific petition now before the U.S. Fish and Wildlife Service. About 6,000 wolves live in the lower 48 states, with most of the predators in the Great Lakes and Northern Rockies. The species was trapped and poisoned to near-elimination last century and remain endangered except in Alaska, Idaho and Montana.