Based on the decision of the Municipal Court in Vrbovac, a veterinary expertise were established to determine the cause of the death of the game, the causal link between the possible effects of dogs and the death of the game, as well as all relevant circumstances related to the clarification of the causes and adverse consequences of the critical events. For the purposes of this expertise, it was necessary to carry out an appropriate investigation with all the accompanying examinations that could have arisen from it. Unfortunately, due to unknown reasons, there was no adequate implementation of the investigative process. Nevertheless, in this graduate thesis we have considered all stages of investigation, identification and assessment of bite wounds, necropsy procedure and DNA analysis that should have been implemented in order to determine the cause of death of the deer and the causal link with the activity of the present dogs. Based on the data from the court file, that is, the examination of the relevant facts and the circumstances given in the findings from the file, the cause of the death of the seven deer could not be determined because there is no necropsy of the killed animals. The cause of death can be assumed on condition that the subject dogs exhibited predator behaviour in a way that they chased the victims for a long time and attacked them by inflicting injuries. Therefore, we assume that the deer died due to manipulative myopathy and injuries that resulted from bleeding and severe mechanical damage to the muscles.