The volcano was declared Volcán Barú National Park in 1976, with an area of . It is a part of the Mesoamerican Biological Corridor. Fauna include the black guan, black-and-white hawk-eagle, Underwood's water mouse, volcano junco, wrenthrush, and yellow-thighed brushfinch. Over 250 species of birds have been identified within the park, and all five species of big cats live here as well. The national park protects a range of habitat, including humid montane forests, low humid montane forests, and montane rainforests.