Looks small on the dogs but was it kinda bulky on the cat's collar?
Our cat keeps losing it's collars - especially as now all the collars for safety have a break-away clip, and I think he's worked out he can just hook it on something and yank it off. At least with one of these I could find the collar if not the cat! :-)
Or not if he sheds it in drain culvert or under a house :)
He often comes hme with whiskers covered in cobwebs - so has been somewhere dark and gloomy for sure and there's probably a pile of collars there too.