Glad everything turned out well. It sure is scary.

I too always take their collars off when I can not supervise them. A few years ago, Nanook my shep mix was just laying on the floor, I kept hearing his tags gingle, but they sounded different than usual. After a couple minutes I went into the room he was in to see what he was doing and his tags were stuck in the heat run cover. Good thing I was home & I was also lucky that it was summer, if he was home alone during winter when the heat kicked on that could of caused some helath problems.