A dog harness (1) with a leash-holding element with controlled displacement (3), developed primarily for search dogs performing special work, comprising a back strap (28), a leash ring fixed on it for attaching a leash, a belly strap (30) equipped with a quick release buckle, and a chest strap running between the chest bone and the throat area. The leash-holding element with controlled displacement (3) has an elastic design, stretching along the axis line (27), in line with the spine of the dog to a given extent, reducing the load on the dog when led on a leash, primarily during special mantrailing—search work, when the dog is sniffing the ground with an outstretched neck. The leash-holding element with controlled displacement (3) comprises an elastic portion (8) and a loop portion limiting the stretching of the elastic portion (9), and a loop holding a leash-holding end element (16), which move on the axis line (27), at least partially through an opening formed between a strip limiting cover element (4) and a saddle part and/or underlay (25), as a function of the forces acting on the leash-holding end element (15). Thereby the leash-holding element (15) follows the mechanism of movement characteristic of search work, and allows smooth working for the search dog led on a leash. The invention can be applied to several types of dog harnesses.