Technical Abstract: Evolving GPS-based, animal tracking technologies have now made it possible to make season-long evaluations of livestock distribution and activity patterns at very fine-scale temporal (< 60 sec) and spatial (<1 m) resolution. We used the Clark Animal Tracking System (Clark ATS) to evaluate cattle behavioral responses to prescribed fire applied in mountain big sagebrush communities to control invading western juniper. Upland and riparian use patterns of mature beef cows were evaluated using Clark ATS collars. In this demonstration, we illustrated changes in range use and habitat-specific activity patterns exhibited by collared cows tracked for 2 years pre-fire and 4 years post-fire on two different fire study areas. We also demonstrated spatial analysis techniques for classifying animal-activity types from intensively-sampled GPS location data. Additionally, modeling approaches for evaluating effects of other landscape-scale disturbances, such as predator re-introduction, on livestock range-use patterns were demonstrated.