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.
A few gray wolves live in the Great Lakes area and Yellowstone, but most are found in Alaska. Less than 1,000 gray wolves live in Yellowstone. Gray wolves are often found in forest areas where game, such as deer, are abundant and where dens can be prepared for cubs; but the species can thrive in diverse climates.