The largest of all kangaroos, the largest mammal native to Australia, and the largest surviving marsupial. This species is a very large kangaroo with long, pointed ears and a squared-off muzzle. Males have short, red-brown fur, fading to pale buff below and on the limbs. Females are smaller than males and are blue-grey with a brown tinge, pale grey below, although arid zone females are coloured more like males. It has two forelimbs with small claws, two muscular hind-limbs, which are used for jumping, and a strong tail which is often used to create a tripod when standing upright. The red kangaroo's legs work much like a rubber band. The males can leap over 9 metres (30 ft) in one leap. Males grow up to a body length of 3 metres (9.8 ft) long and weigh up to 135 kilograms (300 lb). Females reach a body length of up to 1.1 metres (3.6 ft) long and weigh up to 35 kilograms (77 lb). Tails can be from 0.9 to 1 metre (3.0–3.3 ft) long. The average red kangaroo stands approximately 1.5 metres (4.9 ft) tall. Accounts of sizes greater than this are not uncommon, with some large males reportedly reaching approximately 2 metres (6 ft 7 in).
The red kangaroo ranges throughout western and central Australia. Its range encompasses scrubland, grassland, and desert habitats. It typically inhabits open habitats with some trees for shade.