Boxer Rescues are the bizziest of rescues....go to different rescue groups, you'll see a lot of young 'uns on their available dogs page, and that is because of their wild & crazy (boxer) behavior. I am going thru this with BigPapi34, he's 14 mos old. Driving us nuts...but this is our 3rd boxer, so we are used to this behaviour. He whines like crazy, but we don't pay attention and after a while he'll stop and go do what he does. Believe me, it takes a lot of patience. We also have a 7 yr old boxer/pit bull female who is the alpha and puts him in his place when BigPapi34 starts to annoy her.
BigPapi34 (named after David Ortiz of the Boston Red Sox) realizes when he's being a pest, and after a while, he'll just come jump on my lap and crash, and snores away. He is a 'chin rester" placing his chin on our feet, on our knees, he always has to be with us. We are his pack. I put him in his crate in the afternoon for 1.5-2 hrs a day, so he can chill out. We then go for a walk, and by late afternoon, he starts to wind down. By supper time, he is just about out. He sits on our lap all evening. We love every minute of it.
Maybe a boxer is not for you, or you could try adopting a younger and opposite sex boxer, so they can box and whine together! You'll have to put your nick nacks and anything breakable up higher or away.
To me, boxers are the best breed, they arent for everyone. One breeder told me they grow tall their first year, fill out their second, and grow their brains the third year! I think many boxer owners here can agree with that!
Be patient, it is worth it!
Claire