With Great Danes they do a procedure to their ears so they will stand up straight. They do it to a few other breeds as well...I personally like them floppy and natural..but man he is one handsome dude!!!
Some people do it to Boxers as well, I didn't, but he did come with a docked tail. They do the tails when they are like a couple days old so it isn't as bad.
One hadsome dog, I love the color!
I imagine you are anyway, but make sure you feed him large breed dog food at least until he is close to full grown.
When I got my boxer pup (before the wife and kids of course) I fed him Eukanuba large breed puppy ( WOW was that expensive!) While I lived on ramen noodles and the 'Beast' ( milwakees best beer ). He ended up about twenty pounds heavier in muscle than two of his brothers my friends had were. The expensive good dog food also makes them easier to house train, they only poop about once a day. I dont think mine ever had a accident, but we always spent the majority of the day outside and I was self employed at the time and he was always with me. Well he did pee on my chest once, he couldn't get me up (too hung over I guess) licking my face and wineing. Boy did I get up when he peed on my chest though! Lol! He was little then about the size of a baseball, ended up over a hundred pounds!