From The First News in Poland:

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.

To add a broader geographical context, they cooperated with researcher from Lithuania, Belarus, Slovakia and the Czech Republic.

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