Produced in Spanish, this series contains 20 lessons on the intermediate level for teachers to use in foreign language science study. The black rhinos are located throughout eastern and southern Africa and from northeastern Sudan to as far west as northeastern Nigeria. This rhino is actually gray in color, and it weighs about 2,500 pounds and stands between 5 and 6 feet tall at the shoulder. These animals are usually found resting in muddy water during the hottest part of the day because they have no sweat glands. Unfortunately, this animal is becoming scarce because of the poaching for its horn.