The Island Spotted Skunk, Spilogale gracilis amphialus, and the Island Fox, Urocyon littoralis, are two mesocarnivores that co-occur on Santa Rosa and Santa Cruz Islands, part of the California Channel Islands archipelago. For almost 20 years, the National Park Service has been laying out grids of traps to monitor the fox population on Santa Rosa Island, and skunks are incidentally caught in the traps as well. Through these monitoring efforts, it was observed that when the fox population declined, the skunk population increased, but has fallen again since the recovery of the foxes. This information suggests that the foxes and the skunks have a competitive relationship. Both species occupy similar niches, but the foxes have a competitive advantage due to their larger size, broader diet, and range of temporal activity. We are investigating the extent to which this competitive relationship is partitioned by the vegetation these animals rely on for habitat and food. Using historical trapping data on Santa Rosa Island, we compared the fox grid locations and trapping success rates to vegetation maps in order to visualize the habitat utilization of each species and ran statistical tests in R to determine if specific vegetation associations were significant.