As a matter of fact, a lot of rep. vets will NOT crop ears. Tails...well with certain breeds, there is a debate... I am no expert, so I won't go there. I have a dog, a rescue boxer, which is a lovable natured dog, but I trained him to be protective of my house and car. His ears are NOT cut, but that don't matter because his bite is just the same, ears cut or not. I grew up with a doberman.... sadely, my parents didn't know better, and had it done. No difference at all. I also had a pit bull, no cropped ears or tail....that dog would have taken down anything..... so what is your scientific proof, just because you cut a dog, it makes them "more protective?"
By the way, how may fur coats do you own? This is one of the reasons I got so pissed when I first posted.... If you want to mutiliate yourself, that's your choice, but to do such surgery on a dog, for any reason but to make them look "fierce" or protective and mean, that's so sick.
This is a dog forum and you are applauding the cutting of ears and tails.....?? give me a break.
Edit again... you wrote here 9/13 about cropping and then again on another post about aggression on 9/23 (I think, or somewhere in that time frame). Balance has nothing to do with tail docking and dogs, it's a pack/communication thing.
If your dog bit your sister on the face, you have a big problem and may not be as knowledgable as you think. Don't believe everything you read on the internet (this includes me) and half of what you see. If your dog bit your sister, you need to get your pup into "class" with a trainer who deal with aggression and work with him or her and your dog. But then again, you liked the idea of having ears and tail cropped. I bet if you took something off of my body for NO reason, I would want to bite someone too. You may think of me as rude, but again, don't listen to my advice, one I really didn't give it and I would charge way too much, but please do talk to a trainer. If not for you or your sisters face, for your precious pup....