I bought her a sirloin steak - much more practical
Another thing Boxers have a habit of doing is a silly twirl around dance when they get too giddy or excited - never ever put a finger under the dog's collar to hold it.
My eldest daughter did just that with Max our previous male Boxer when someone called at the door he knew and liked. He got excited, started bouncing around, she hooked his collar with her forefinger, he continued to twist and nearly pulled her finger off as the collar tightened up on it. Then he panicked as the collar tightened on his neck.
Luckily I heard the screams, saw what had happened, grabbed a kitchen knife and cut his collar to release them both. There is no way I could untwist the collar with them both attached to it.
As luck would have it she got away with severe bruising, and shock.
If you need to hold a dog's collar make sure all four fingers are under it.