Well, I don't think it's ok for all of the dogs, but I can understand it for some breeds. For boxers and pointers and stuff I can see why they do it. If their tails aren't docked they beat them on brush and walls and stuff and they get abrasions and bleed to no end. Now for rotties I don't understand it. There's no good reason. They dock the tails when the pups are a day or two old and while it's not pleasant for either party it's not nearly as bad as cropping ears.

And as for cropping ears.....I don't endorse that at all. There's no reason whatsoever for that and it's a long and drawn out procedure and painful recovery.