| Medium-sized mammal with long incisors; webbed feet; and a long, flat tail
Slow-moving streams or lakes near willow, aspen, or other deciduous trees and shrubs
The cambium (inner bark) of willow, aspen, balsam poplar, and cottonwood trees; also shrubs; aquatic plants
Wolves, lynx, wolverines, bears, humans
Beavers change their environment to suit their needs by constructing large dams and by building lodges. Humans are the only animals that make more extensive changes in their environment.
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