I will ditto that..prime example of why it is important. We have a Lab who had her dewclaws removed but, when we picked her up at 7 weeks we noticed they had started to grow back, deformed of course because they were partially clipped. At 12 weeks she was old enough to stand being put under for the surgery so, we had them redone.
That is how important we feel it is. I have seen some nasty ripped dewclaws, even on carpet..when they snag and get caught.
It's inexpensive to do when they are pups and worth it for sure!