Bests & Worsts Reviews from Amazon

I thought I wrote a review about the sizing but it's not in My Account, so I'm not sure what happened with it. My dog was between sizes (he is roughly 25 lbs and 21" around the chest). I called Thundershirt Customer Support and they suggested ordering by weight. Well, he generally weighs 25, sometimes more, often times less (24 - 28 range). They suggested ordering the size he weighs "most often". So I got the medium. It was way too big for him. I fitted it as tightly as possible and it was snug, but barely so. And it was long enough that he couldn't have urinated with it on. I returned it to Amazon (they don't do exchanges on this product) and re-ordered a size small. It fits fine. (An aside, but that's another great thing about Amazon. The return was so easy, just click through the web site to my order, print out the pre-paid label they provide, drop it at the post office and done.) Now the amazing part. My dog, Baxter, BARKS at EVERYTHING. He also has terrible anxiety attacks, esp. separation anxiety. I first put the shirt on Baxter last night. I hid some food under it first and let him find it, and then put the shirt on him. No balking at all (unusual for Bax). My husband was cleaning the ceiling fan before our twice-a-year switch of air direction and some dust from the tops of the blades fell to the floor, so he got out the vacuum. Normally Baxter freaks out at the vacuum cleaner. Barks, whines, runs into the bedroom and hides under the bed, go batty if the vacuum comes into the same room as him etc. Last night, he just laid on his "throne" and didn't even move (we have an ottoman covered with an old tablecloth that is his preferred resting place). I took a picture and am going to try to put it on this site. You can see the vacuum cleaner cord plugged into the wall in front of him and he is just laying there looking at it while my husband was vacuuming. Totally amazing. I'll be curious to see how it affects the barking thing, but he hasn't barked yet! ***Added later same morning: Baxter fell asleep on the back of the couch, and I started a DVD workout. He usually gets agitated when I start exercising, but he never even woke up. I took a picture of him about halfway through the workout (I don't exercise with a camera - I paused the DVD) and I'll post the pic. He was even sleeping right in front of the ss speaker. I took it off of him for the night, bc I wasn't sure about him sleeping in it. I haven't read whether others do or do not leave it on their dogs overnight, so I did not and can't speak to that. And he doesn't generally bark at night bc he's plastered up against me (Baxter-er the Plaster-er). I was really skeptical when I read the reviews, but now that I have it, I'm a convert! And as a reminder, I'd save the original packaging in case you run into a size issue as it makes the return that much smoother. ***Nov 7 Update*** Baxter still likes his shirt, but some of the newness has worn off, although he isn't as anxiety-ridden as he was pre-Thunder. I began integrating some reward-type "training" when he has the shirt on, and I'm hoping that will be associated with the shirt and get him back to where he was when we first got the shirt.