In a retrospective study including the records of 628 patients of the Medizinische Kleintierklinik München, the significance of electromyography (EMG), electroneurography (ENG) and auditory evoked potentials (AEP) for the clinical diagnosis was determined.Indications for AEP examination were screening for hereditary deafness (59.5%), evaluation of hearing abilities for other reasons (19.2%), vestibular syndrome (13.4%), suspicion on brainstem disease (2.3%), suspicion on hereditary ataxia in the Jack Russell terrier (1.8%) and facial paralysis (3.8%).Indication for the EMG/ENG examination were exclusion of (4.0%) or suspicion on (10.1%) lumbosacral syndrome, lameness of unknown origin (23.5%), paraparesis (8.7%) and tetraparesis (3.4%) of unknown origin, clinical suspicion on a focal neuropathy (15.1%), on a generalized neuromuscular disorder (30.5%), or on masticatory myositis (3.4%), and miscellaneous (1.3%).The electrodiagnostic examination was of decisive significance for the diagnosis of the following diseases: congenital deafness, acquired deafness, focal neuropathies.The electrodiagnostic examination was mostly not decisive, but characterized the disease and indicated the final clinical diagnosis in following indications: (1) AEP for vestibular syndrome, suspicion on brainstem disease, hereditary ataxia of the Jack Russell terrier and facial paresis. (2) EMG and ENG for lameness of unkown origin, suspicion on lumbosacral syndrome, suspicion on a generalized neuromuscular disorder, suspicion on masticatory myositis.For some neuromuscular diseases, sensitivity (S%) and positive predictive value (PPV%) of the electrodiagnostic examination were established:In lumbosacral syndrome, S% was 87.5% and PPV% was 66.7%. In focal neuropathy, S% was 98.3% and PPV% was 100%. In generalized neuromuscular disorders, S% was 91.6% and PPV% was 85.3%; within this group, polymyopathies were diagnosed with S% = 63.6%, polyneuropathies with S% = 90.9%, and neuro-muscular transmission disorders with S% = 75 %.Thus, multiple indications were shown, in which the electrodiagnostic examination contributed essentially to the clinical diagnosis.