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.
Wolves can be found in a variety of climates and habitats. These habitat variations are sometimes seen in the type of morphology, or physical characteristics, seen in gray wolves living in different geographical areas. These differences sometimes differentiate types, or subspecies, of gray wolves around the world.