An animal tag for attachment to an ear of an animal, the tag comprising: a first tag member adapted to be mounted to any one of an outer surface or an inner surface of the animal's ear; a second tag member adapted to be mounted to the other of the outer or inner surface of the animal's ear; a connecting arrangement for inter-connecting the first and second tag member, the connecting arrangement comprising an attachment member having a head portion adapted to be retained in the first tag member and a solid shank portion adapted to be retained in the second tag member, wherein the second tag member comprises a housing (320a, 320b) having a retaining arrangement therein to retain an end portion of the shank portion of the attachment member therein, the retaining arrangement comprising a push nut located in an opening of the housing of the second tag member for receiving the end portion of the shank portion, the push nut comprising a circular disk portion and a plurality of inwardly extending movable segment members arranged circumferentially about the circular disk portion whereby the segment members are movable to allow the insertion of the shank into the opening in a first axial direction and wherein the movable members prevent the shank from being withdrawn out of the opening in a second axial direction, wherein the retaining arrangement further comprises a retaining plug located within the opening of the second tag member, the retaining plug comprising a receiving portion defining a recess, wherein the recess is sized and shaped complementarily to the end portion of the shank portion to receive the end portion of the shank portion. a first tag member adapted to be mounted to any one of an outer surface or an inner surface of the animal's ear; a second tag member adapted to be mounted to the other of the outer or inner surface of the animal's ear; a connecting arrangement for inter-connecting the first and second tag member, the connecting arrangement comprising an attachment member having a head portion adapted to be retained in the first tag member and a solid shank portion adapted to be retained in the second tag member, wherein the second tag member comprises a housing (320a, 320b) having a retaining arrangement therein to retain an end portion of the shank portion of the attachment member therein, the retaining arrangement comprising a push nut located in an opening of the housing of the second tag member for receiving the end portion of the shank portion, the push nut comprising a circular disk portion and a plurality of inwardly extending movable segment members arranged circumferentially about the circular disk portion whereby the segment members are movable to allow the insertion of the shank into the opening in a first axial direction and wherein the movable members prevent the shank from being withdrawn out of the opening in a second axial direction, wherein the retaining arrangement further comprises a retaining plug located within the opening of the second tag member, the retaining plug comprising a receiving portion defining a recess, wherein the recess is sized and shaped complementarily to the end portion of the shank portion to receive the end portion of the shank portion.