A Boxer-Jack Russell terrier mix is a cross between a boxer and a Jack Russell terrier. The characteristics of this hybrid are unpredictable, as it can inherit from a wide pool of genes.
Both the boxer and the Jack Russell terrier are compact, sturdy breeds with energetic, brave and affectionate temperaments. A cross between these breeds would likely inherit these same traits in addition to a high level of intelligence. The Jack Russell terrier can grow to a height of 15 inches and generally weighs under 20 pounds, while the boxer can reach 25 inches in height and weigh 70 pounds.