sentences:  The nose ring assists the handler to control a dangerous animal with minimal risk of injury or disruption by exerting stress on one of the most sensitive parts of the animal, the nose.Bulls, especially, are powerful and sometimes unpredictable animals which, if uncontrolled, can kill or severely injure a human handler.Control of the bull may be done by holding the ring by hand, looping a piece of rope through it, clipping on a bull staff.