A device for restricting the movement of a four-legged animal, the device comprising: - an animal harness with neck straps (2.2), chest straps (2.3) and a back piece (2.1) running from the animal's neck to the vicinity of the animal's hip, - bands arranged around the animal's hind legs; - a cord arranged from each band to the animal harness; where the cord is arranged between respective bands and the animal harness; characterised in that: - the device further comprises an actuator for tightening the cord, which actuator is arranged on the animal harness; where the cord is arranged between the respective bands and the animal harness via respective pulleys, where the two pulleys are fastened to the animal harness; - the animal harness further comprises a tubular guide (2.4) via which the cord is arranged, back straps (2.5) running from the back piece close to the animal's hind legs and under the animal's abdomen, where the two pulleys are arranged at respective ends of an elastic cord means (8.1), which elastic cord means (8.1) is fastened to the animal harness; - the actuator is fastened to the forward part of the animal harness; - the actuator comprises an electric motor (10.1) provided for tightening the cord; - the actuator is capable of being activated by a receiver unit (4.1) able to receive signals from a transmitter unit, where, when a signal is received from the transmitter unit of the signalling unit, the electric motor (10.1) is actuated and the cord will be shortened, thereby restricting the movement of the four-legged animal; - where, when the cord is slackened, it is drawn up vertically along the animal's hind legs because of the elastic cord means (8.1). - an animal harness with neck straps (2.2), chest straps (2.3) and a back piece (2.1) running from the animal's neck to the vicinity of the animal's hip, - bands arranged around the animal's hind legs; - a cord arranged from each band to the animal harness; - the device further comprises an actuator for tightening the cord, which actuator is arranged on the animal harness; where the cord is arranged between the respective bands and the animal harness via respective pulleys, where the two pulleys are fastened to the animal harness; - the animal harness further comprises a tubular guide (2.4) via which the cord is arranged, back straps (2.5) running from the back piece close to the animal's hind legs and under the animal's abdomen, where the two pulleys are arranged at respective ends of an elastic cord means (8.1), which elastic cord means (8.1) is fastened to the animal harness; - the actuator is fastened to the forward part of the animal harness; - the actuator comprises an electric motor (10.1) provided for tightening the cord; - the actuator is capable of being activated by a receiver unit (4.1) able to receive signals from a transmitter unit, where, when a signal is received from the transmitter unit of the signalling unit, the electric motor (10.1) is actuated and the cord will be shortened, thereby restricting the movement of the four-legged animal; - where, when the cord is slackened, it is drawn up vertically along the animal's hind legs because of the elastic cord means (8.1).