Welcome to the forum...What's your girl's name? Boxers do go thru a few stages when they look refugees from a starving third world country, but if you don't see any of the spine showing, I wouldn't worry a whole lot...I rescued a female at 9 months and she looked worse than that and it took awhile to get her fattened up some. Simply by using a high grade food, the fact that she is getting regular meals will do a lot, but I do like to give them a "protein snack" as well...Peanut butter and plain, low fat yogurt with some banana,, Yummy....