Fascinating new research sheds light on unknown secrets of Polish wolf packs

From thefirstnews.com:

New research conducted by the Warsaw University maps the DNA of the Polish wolf population and presents their dynamic expansion west.

After seven years of work and analysis of over 2,300 samples of wolf excrement, urine, and fur and tissue fragments from dead wolves, the scientists can not only distinguish three main groups within the species, but also where they migrate.

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