The kangaroo has lungs and breathes oxygen from the air. The joey drinks milk inside its mother's pouch. The kangaroo is related to the koala . This is how the red and gray kangaroo are different. Kangaroos are red, gray, brown, and tan.
Kangaroos have fur for a coating.
The gray and red kangaroo are both 5 feet tall. The gray kangaroo weighs up to 200 pounds. The red kangaroo usually weighs up to 120 pounds. The male red kangaroo weighs 180 pounds. The female red kangaroo weighs 65 pounds.