Mine can definitely jump gates - we have their food & kitty litter in the bathroom & toilet and a gate across the doorway to stop DS getting at the food, water & especially the litter tray. When we put the gate up they didn't want to jump because they were being obstinate, but after half an hour on the 'cat side' of the gate they just jumped and have been ever since - although the lazy white one waits if he thinks you're going through the gate soonish.