Thomas Newsome, environmentalist, Australian dingo ecology expert, researched both of genus Canis representatives in Europe testing the hypothesis that the range expansion of golden jackal was triggered by intensive persecution and resulting decline of the gray wolf.
It is obvious and scientifically confirmed, gray wolf and domestic dog can randomly cross resulting with a hybrid as a consequence of pairing each other different - however infertile (capable of interbreeding), matched by sufficient parental compatibility - species/subspecies individuals.
Native fauna and flora species still inhabit the considered - especially by outsiders - as unfriendly dangerous environment, flourishing there without a human factor presence, where approximately 70% is forest (biocenosis) containing water sources like lakes, rivers and marshes (biotope).
The majority of animal behavior is instinctive - genetically conditioned hereditary ability of animals (including humans) to proceed according to specific behavioral sequences driven by impulses and controlled by selected external stimulus, being primary conditions for survival.
Isle Royale National Park service decided about reintroduction of a wolf species to the island, by release of 20-30 individuals in 3-5 years, starting from fall 2018. The only similar experimental occurrence took place in Yellowstone National Park where it covered the open interstate area.
Without a doubt, the "experimental population" of Yellowstone is the most thoroughly researched and most often studied wolf population in the world.