Constructive arrangement incorporated in post-surgical clothing of domestic and related animals, more precisely clothing for domestic animals such as dogs and cats which underwent abdominal surgery such as castration, cesarean section, tumor removal or stomach surgeries, said clothing preventing the contact with and/or access by the animal to surfaces protected by medicines, dressings and even preserving areas affected by skin diseases, characterized in that: said clothing is formed by four parts, two first identical and mirrored parts (Q1, Q1'), and two second identical and mirrored parts (Q2, Q2'); the two first and mirrored parts (Q1, Q1') each comprising a first longitudinal side (A, A'), a second longitudinal side (C, C'), a front end (E, E') and a rear end (G, G'), and the two second identical and mirrored parts (Q2, Q2') each comprising a first longitudinal side (D, D'), a second, free, longitudinal side (B, B'), a front end (F, F') and a rear end (H, H'); wherein the two first identical and mirrored parts (Q1, Q1') are joined together at their respective first longitudinal sides (A, A') by a longitudinal seam; wherein the two first identical and mirrored parts (Q1, Q1') are each joined at their respective second longitudinal sides (C, C') to a respective first longitudinal side (D, D1') of a respective one of the two second identical and mirrored parts (Q2, Q2') by a longitudinal seam; wherein the limit (LC1, LC2, LC1', LC2') of said longitudinal seams is located after a middle portion of the first and second identical and mirrored parts (Q1, Q1', Q2, Q2') toward a rear part of the arrangement; wherein each of the two first identical and mirrored parts (Q1, Q1') is provided on its first longitudinal side (A, A'), with two transverse seams (C01, C02, C01', C02') forming an optional opening base (AB, AB'); wherein the two first identical and mirrored parts (Q1, Q1') are joined together by seams at their respective front ends (E, E') and at their respective rear ends (G, G'); and wherein the two second identical and mirrored parts (Q2, Q2') are joined together by seams at their respective front ends (F, F') and at their respective rear ends (H, H'); so that vertices of the first and second identical and mirrored parts (Q1, Q1', Q2, Q2') are provided with cut-outs (PSQ1, PSQ2, PIQ1, PIQ2, P1C, P1, P2, PSQ1', PSQ2', PIQ1', PIQ2', P1B, P1A, P2A; wherein each cut-out is provided at its peripheral outline with sewed straps; and wherein the second, free longitudinal sides (B, B') of the two second identical and mirrored parts (Q2, Q2') are provided with closing means formed by a long zipper (Z, Z'). said clothing is formed by four parts, two first identical and mirrored parts (Q1, Q1'), and two second identical and mirrored parts (Q2, Q2'); the two first and mirrored parts (Q1, Q1') each comprising a first longitudinal side (A, A'), a second longitudinal side (C, C'), a front end (E, E') and a rear end (G, G'), and the two second identical and mirrored parts (Q2, Q2') each comprising a first longitudinal side (D, D'), a second, free, longitudinal side (B, B'), a front end (F, F') and a rear end (H, H'); wherein the two first identical and mirrored parts (Q1, Q1') are joined together at their respective first longitudinal sides (A, A') by a longitudinal seam; wherein the two first identical and mirrored parts (Q1, Q1') are each joined at their respective second longitudinal sides (C, C') to a respective first longitudinal side (D, D1') of a respective one of the two second identical and mirrored parts (Q2, Q2') by a longitudinal seam; wherein the limit (LC1, LC2, LC1', LC2') of said longitudinal seams is located after a middle portion of the first and second identical and mirrored parts (Q1, Q1', Q2, Q2') toward a rear part of the arrangement; wherein each of the two first identical and mirrored parts (Q1, Q1') is provided on its first longitudinal side (A, A'), with two transverse seams (C01, C02, C01', C02') forming an optional opening base (AB, AB'); wherein the two first identical and mirrored parts (Q1, Q1') are joined together by seams at their respective front ends (E, E') and at their respective rear ends (G, G'); and wherein the two second identical and mirrored parts (Q2, Q2') are joined together by seams at their respective front ends (F, F') and at their respective rear ends (H, H'); so that vertices of the first and second identical and mirrored parts (Q1, Q1', Q2, Q2') are provided with cut-outs (PSQ1, PSQ2, PIQ1, PIQ2, P1C, P1, P2, PSQ1', PSQ2', PIQ1', PIQ2', P1B, P1A, P2A; wherein each cut-out is provided at its peripheral outline with sewed straps; and wherein the second, free longitudinal sides (B, B') of the two second identical and mirrored parts (Q2, Q2') are provided with closing means formed by a long zipper (Z, Z').