My dogs were playing and one got her lower jaw twisted in the other dogs nylon collar. The collar pinch buckle wouldn't release due to the pressure and the dog wearing the collar was nearly unconscious. I grabbed my shears and managed to get them between the dog and the collar. They didn't cut at first because, as luck would have it I was trying to cut through the tripled-over thickness near the collar adjustment. I applied more pressure as the dog gargled and went limp and the shears cut through the triple thickness literally freeing her just in time.