What Animal Eats Aspen Bark?

What Animal Eats Aspen Bark? Aspen is especially susceptible to gnawing or stripping of its bark by several species of mammals, such as elk, deer, rabbits, hares, mice, voles, and porcupines. Aspen buds are an important winter food source for wildlife. Do elk affect aspen trees? Previous thinking went like this: Aspen are not regenerating