A case of Ebstein’s anomaly leading to right-sided heart failure in a one-year-old female Golden Retriever is reported. Clinical examination and investigations such as blood analysis, ECG, X-Ray, echocardiography and conservative therapy are described. Finally, the post mortem examination of the heart clearly showed the distal displacement of the malformed tricuspid valve leaflets, chordae tendinae and papillary muscles in the right ventricle, which is characteristic of Ebstein’s anomaly.