This data was collected as part of the National Environmental Science Program's Threatened Species Recovery Hub (Project 1.1.12 - Mitigating cat impacts on the brush-tailed rabbit-rat). This dataset includes all detections of feral cats recorded on large grids of camera-traps deployed at four locations on the Tiwi Islands. Each of these grids consisted of 70 camera-traps, deployed in 14 rows of five cameras, with each camera spaced ~500 m apart. Camera-traps remained continuously recording for eight weeks. The location of each camera-trap is also provided.