I have a friend who shows English Cockers with undocked tails. They're really beautiful dogs. When I had APBTs, I always opted to leave their ears and tails natural, partly because I like the look and partly because I think people tend to react more positively to an unclipped dog.

Seems like some dogs look a little awkward with their full tails, and I wonder if it's not because they've not been bred with any attention to proper tail shape and size. Their picture of the "undocked Pembroke Welsh Corgi" is actually of a Cardigan. Their tails are never docked, but a tail on a Pembroke would indicate a serious breeding problem. They come with little or no tail.