From phys.org:

rey wolves are hosts to a variety of parasites. The presence of grey wolves in German forests has little influence on the parasite burden of hunting dogs. This reassuring conclusion is the result of a new study at the Berlin-based Leibniz Institute for Zoo and Wildlife Research (IZW). The study examined the faeces of 78 hunting dogs over several months in an area without wolves and in one that had been recolonised. The results have been published in the International Journal for Parasitology: Parasites and Wildlife.

Click here for the full story.