A German shepherd and boxer mix will probably stand 22 to 26 inches in height and weigh between 53 and 85 pounds. The size of a mixed breed puppy can't be predicted exactly but typically falls between the sizes of the parents.
Puppies bred by crossing two purebred parents of different breeds can inherit any combination of their parents' characteristics. A German shepherd and boxer mix is likely to be energetic, intelligent, loyal and protective, as these traits are characteristic of both breeds. The cross may be prone to hip dysplasia but may likely be free of other genetic disorders that German shepherds and boxers do not have in common.