Over 1,700 animal species have been found in the Park, including 46 species of mammals, 202 species of birds, 12 species of amphibians and 5 species of reptiles. The most characteristic animal living in the Park is European beaver, numerous in lakes and rivers. Currently there are around 250 beavers there. Also, sometimes one can meet a wolf. In Park’s waters thrive 32 species of fish. For some animals, Wigry National Park is the only place to live. 289 species are protected by law and 128 of them have been placed on the Red List of Endangered Species in Poland.