ISBN-13: 9781505311532 / Angielski / Miękka / 2015 / 26 str.
Prairie Dogs are often described as a keystone species and ecological engineers have declined as much as 98 percent throughout North America since European settlement. Viability of several species has become an important biodeversity issue. All species are listed or have been petitioned for listing under the Endangered Species Act of 1973