Abstract: In the detection and investigation of non-obvious crimes, criminologists are short of information about the identity of the perpetrators. The olfactory traces at the scene investigative personal data about participants of the event more than any other the next person.The article highlights the history of the national forensic odorologii, one of which is the formation of the participants co-author K.T.Sulimov was from 1966 to 1998., Discusses the arguments and perspectives in the gene pool of hybrids (bastards) Laika reindeer herding and European jackal.The name of the method gave Yuriy Lekanov, served as the chief forensic department of the Russian Federation Prosecutor's Office, the investigative method to introduce the practice.Article provides reliable evidence-based methods of preparation and use of dog odor detectors to identify the individual on the olfactory trail.