The invention relates to a carabiner including a metal body, and a gate rotatably assembled to a first end of the metal body between a closed position and an open position of the carabiner, the gate being in contact with a second end of the metal body when the carabiner is in closed position. The carabiner is provided with a separation bar fastened to the metal body and configured to define two distinct confinement areas. The bar is assembled by clipping onto the metal body at first and second opposite ends of the bar, the first end comprising a first fastener totally surrounding the metal body, and the second end comprising a second fastener totally surrounding the metal body. The separation bar being configured to authorize the opening of the gate when the first and second fasteners surround the metal body.