Red kangaroos are the largest marsupials. Red kangaroos live in grasslands and shrublands of Australia. Male kangaroos are called boomers and female kangaroos are called bluefliers, their young is bluish gray. The Red kangaroo can jump up to 6-8 feet and they can reach speeds up to 35-40 miles per hour. A group of kangaroos is called a mob. Red kangaroos eat grass and short green plants. Red kangaroos can weigh up to 180 pound, the hight of an adult Red kangaroo can be 5 feet.