A ceiling-mountable animal trap (100) has a housing (102), a snap trap (110), and an indicator (118). The snap trap (110) has a treadle member (112), a killing arm arrangement, and a trigger (116). A killing arm (114) is pivotally mounted, has a set position, and is biased toward an impact position. The trigger (116) couples the treadle member (112) to the killing arm (114) and releases the killing arm from the set position. The indicator (118) is movable between a recessed position and a projecting position in which it projects from the underside of the housing (102). The indicator is held in the recessed position by the killing arm arrangement when the killing arm (114) is in the set position. The indicator (118) decouples from the killing arm arrangement when the killing arm (114) moves towards the impact position so that the indicator moves to the projecting position.