Without proper fit Hott Doggers won't stay on your dog properly. There is a very simple way to measure your dog. Start by getting a pad of paper and pen. Now call your dog (or if your dog has you well trained, go get your dog). Place a front paw, that's important so we'll say it again, place a front paw on the paper while your dog is standing on it. Hey we didn't say this was going to be easy! Draw a line at the back of the paw right behind the foot pad and another line right in front of the toe nails. Hmm, you'll have to go get a ruler now (and you thought internet shopping meant sitting on your behind and clicking a mouse). Measure between the two lines. Now pick a size from the table. Your measurement should be larger than the From and smaller than the To. Easy right? If your dog is right on the line between sizes, we suggest getting the larger size.