Oh, this dog doesn't spend a whole lot of time outside in bad whether, so the "heat issue" is more the owner anthropomorphizing. This dog is owned by an elderly woman and is pretty much attached to her at the hip. I was afraid you'd say that about it still ruining the coat and making matts easier, though. I assume by "ruining a dog's coat" you just mean that if allowed to grow out again it wouldn't look the same as before she was shaved? It's too bad because it looks nicer than a normal pom coat IMO, but of course there are more important things than looks. Anyway, I was mostly just curious. Thanks for weighing in, guys.