I am new to the boxer breed. My girlfriend and I just rescued a mix pup from a shelter. I know for a fact she is more than half boxer. She is young, the shelter said she was 12 weeks. but at her size I cant believe it. I think she may be around 8. she is only 11lbs and looks really light. can see a lot of ribs and leg bones are soooo defined. of course we are planning on the best high protein food, I want to get this adorable little one as healthy as possible as soon as possible any tips helps. thank you so much.