An appropriate conceptual leap can be made from human geography to physical
geography by applying space-time continuum modeling to zoogeomorphology-th
e alteration of the landscape by animals. Drawing on the work of Torsten Ha
gerstrand, we propose a space-time continuum model of grizzly bears, a geom
orphic agent. Through both data-driven and conceptual applications, the mod
el traces where and when grizzly bears are likely to wield a geomorphic imp
act. The model further demonstrates that geographers have much to gain by m
erging concepts from human and physical geography.