A continual watch is kept over cattle during the night camp, usually with one horseman riding around the mob, unless the cattle are restless when two riders would be used. A rush can be started by a sudden noise such as a dingo howl, a bolt of lightning, sparks from a fire, or even a bush rat gnawing on a tender part of a hoof. Drovers tell vivid stories of the totally chaotic conditions that occur when several hundred cattle start a rush at night. If they head towards the drovers’ camp, the best option may be to climb a sturdy tree (very quickly). Many drovers have been trampled to death in a rush, sometimes still in their swags. A good night-horse can be given its head, and will gradually wheel the leading cattle around until the mob is moving in a circle, and calm can be restored.