A retrospective study of 45 polytrauma patients was conducted in order to identify clinical and laboratory parameters with a prognostic value regarding the outcome. All data had been received from medical records. Twenty seven of dogs survived and were discharged from the hospital while the remaining 18 died and thus two groups were formed (survivals and nonsurvivals). Relationships between signalments, clinical, and laboratory parameters and outcomes were evaluated by means of logistic regression analysis. Based on the variables with the most significant influence upon mortality a new survival prediction scoring system was suggested