Despite overlapping in body size, diet, and habitat use, sympatric ocelots (Leopardus pardalis) and bobcats (Lynx rufus) in South Texas exhibit temporal niche partitioning. Using GPS and accelerometer data, we found that ocelots are strongly nocturnal, while bobcats are crepuscular, with peak activity at sunrise and sunset. Bobcats were more active on bright moonlit nights, whereas ocelots were most active during low lunar illumination. Ocelots also reduced daytime activity on hotter days. Although both species showed some overlap in nocturnal and crepuscular activity, these differences help facilitate their coexistence.