I know how to fit a prong, I know it's supposed to be high up. My dilemma is that Juno's neck appears to be a sort of "in between" size and I'm not sure which way to go. If I have all the links on it, it starts up where it should be, but if she shakes her head or just during the course of a walk, it starts sliding down and ends quite a bit lower on her neck. If I remove a link though, it's borderline too tight I think? Like I don't know, I can't decide how snug is TOO snug. I wish I could remove just HALF a link lol. I'm just not sure if I should leave all the links in, or go with a snugger fit. With all the links it's more of a "regular" collar fit, I can get probably a couple fingers under it. With a link removed it's not exactly digging into her or anything, it's just not as easy to just slide a finger underneath it.