Get this thing off me

While we were visiting last, there was one collar that Brandy and Mike were switching around from puppy to puppy.  Whichever puppy had the collar on was seriously distracted.  He would run around in large circles away from the other puppies hopping on three legs while his fourth leg tried to itch the collar around his neck.  Eventually he would stop sit down and start itching, then get up again and start hopping again often yelping helplessly.