Tracking for wounded game animals with bloodhound dog is one of the most demanding disciplines of hunting cynology. Success of tracking depends on many ecological and other factors. The aim of research was to determine how some environmental factors (air temperature, relative humidity), age of blood trail, shot placement and rifle calibre affects on the success of tracking for wounded animals. Research was conducted on the natural trail of wounded wild animals during 6-hunting year period and included 5 species of large game animals. A total of 363 wounded game animal trackings were performed, with 241 animals found. In 53.1% of cases, animals were found alive at the end of the track and it was necessary to stop the wounded animal with hunting dog and make the mercy shot. Age of wounded animal trail ranged from 0.5 to 26 hours. The tracking results and characteristics of the individual tracking were recorded in the "Tracking of wounded wild animals report". Two Hanoverian Scenthound dogs, specialized for tracking wounded game animals, were used in the research. The research was conducted in the State hunting ground number VII / 15 ”Zapadna Garjevica” in the Moslavačka gora region. Research results show that air temperature plays an important role in the tracking of wounded wild animal but is not crucial, it mostly affects on the duration of the search itself. The worst results were achieved during and after rain and heavy rain. The specific of this research is also in fact that wounding of game animals, in 89.5% of cases, was done with a rifle cal. 30.06, ammunition from manufacturer RWS, grain construction uni classic 11,7 gr weight.