Well, I think it does make some breeds look better, like the briard, but I wouldn't do it myself. Personally, if you must change the dog's appearence to suit your wants, I think you shouldn't have that breed. I've also heard of breeders making acceptions to cropping and occasionally docking. Docking is only done in a few countries, so you can find undocked puppies. I'm undecided on docking because some dogs do break their tails more often or break the skin and bleed. Cropping on the other hand doesn't do anything to help the dog.