To summarize, my boss has an adult son that lives in her home. The Mexican Hairless dog in question is mostly his but she cares for him quite a bit as well. The dog wears a choke collar during the day when everyone is gone and is loose in the house. I just came to be aware of this and set her straight. They simply didn't know its not a "regular" collar but a training collar and that dogs can choke themself if the ring catches on something. By boss immediately saw the danger but was going to let her son actually stop using it. We thought he had gotten the idea over the weekend but the two-year old granddaughter had actually taken it off of him and accidently dropped it in her weeble-wobble treehouse. They found it the next day and he put it back on. Yesterday I sent home a printout of the dangers for her to give him, and she made him remove the choke collar. His retort was "well, what does she think we're supposed to do when he's out in the yard and we need to grab ahold of him?!" I thought this the most idiotic retort from an intelligent individual that I've ever heard. Well, you put a nylon collar on him that won't choke the poor thing! I can't believe the stupidity of even smart people sometimes.