Groundhogs are often called whistlepigs due to their tendency to squeal when attacked or to warn their young of approaching danger.

The sides of highways are an assault on the senses, with hot blasts of wind radiating from the busy roads bringing pungent fumes and loud noises that overwhelm most wildlife that approach. Many times, wildlife stumbling onto a highway are forced to quickly turn back or face a quick death attempting to cross through a seemingly endless stampede of automobiles.