Magnum and Bumper get them because they are forever grooming each other, Scully, even with his long coat, has only had one in the 2.5 years we have had him and I don't think Boomer has ever had one (that I ca remember at least). Occasionally we come home to one and don't know who it belongs to though. Having four of them, one of them gets one every 5-6 weeks, so they are not that common between them.
