Corrugated fiberboard is sometimes called corrugated cardboard, although cardboard might be any heavy paper-pulp based board.
Gray Wolf. The gray or timber wolf's story is one of the most compelling tales of American wildlife. Once, the wolf was widespread across most of North America, but it was hunted ruthlessly and extirpated over most of its range. Today, the wolf is making a successful comeback in some of its former habitat due to strong conservation efforts.
How many gray wolves are in the United States? Biologists believe that more than 5,500 gray wolves remain in the lower 48 states. Currently, populations exist in Alaska, Montana, Wyoming, Idaho, Minnesota, Wisconsin and Michigan. According to Defenders of Wildlife, Alaska's wolf population is estimated to be between 7,000 and 12,000.