Intervertebral disc disease (IVDD) is the most common disc disease in dogs. The diagnosis is based on anamnesis, patient history, neurological examination and imaging tests and the association of these data influences the choice between conservative or surgical treatment. The objective of this report is to present a case of chronic intervertebral disc extrusion, located between thoracic vertebrae, emphasizing the clinical-surgical approach, diagnosis and established therapy. An eight-year-old female Maltese canine was referred for surgical treatment after two years of conservative treatment for IVDD. For better identification of the affected intervertebral spaces, a computed tomography scan was requested and, based on the imaging results, the procedure of hemilaminectomy in vertebrae T8-T9-T10 and dorsal laminectomy in vertebrae T12-T13 was indicated. It is concluded that the association of both surgical techniques achieved multiple decompression of the affected thoracic intervertebral spaces, ensuring better quality of life for the patient.