I'm certainly not an expert, but I've picked up on a few things off an on regarding tail docking and ear cropping. I am told that ear cropping is a matter of personal preference if you are not going to "show" your furbaby. I personally like the look of cropped ears, but that probably stems from the fact that my parents always had boxers, and back in th 50's and 60's ear cropping was almost automatic. It is not something that has to be done, and my vet has told me that ears are ears and cropping or not cropping is not a factor in ear health.
But tail docking is another story. Boxer tails are very, well for want of a better term, stout and not very flexible. And we all can agree that bum wiggles are a wonderful trait of our babies. When those tails wag, they can be nearly lethal. We had Great Danes in our pre-boxer years, and they always had their tails bandaged because they would wag them so much and hit them on anything within reach. We had one lovely lady whose tail was always a bloodied mess because she was such a sweet girl and whipped her tail into everything, causing it to bleed frequently. Our vet told us that boxers are the same, and that tail docking is actually the kindest thing to do for our babies.
Like I said, I'm not an expert, just another furbaby lover.