The Jackshund is a small, compact dog typically standing 20 to 33 cm at the shoulder and weighing between 7 and 13 kg. The build often reflects the Dachshund influence: a longer body relative to leg length, with a deep chest and short, muscular legs. The head is proportionate with alert, expressive eyes and ears that may be erect (Jack Russell influence) or pendant and folded (Dachshund influence).
Coat type varies significantly and depends on which Dachshund variety is used: smooth Dachshund crosses produce short, flat, easy-care coats; wire-haired crosses produce a rougher, slightly scruffy texture; long-haired crosses produce a softer, feathered coat requiring more attention. Colours include white, cream, tan, brown, black, and dapple patterns. The tail is typically carried upright with the Jack Russell’s characteristic enthusiasm. The overall impression is of a small, sturdy, alert, and compact dog with clear working heritage.