The red kangaroo is the largest kangaroo species and the largest living marsupial.

The common name for this animal comes from the word "gangurru," which was used by the Guuga Yimithirr people of Far North Queensland. British explorer James Cook first documented the word as "kangaroo" or "kanguru" in 1770. 


Scientific Name: Osphranter rufus

Conservation Status: Least Concern

Size: Adult males can reach a height of close to 6 ft.

Weight: Up to 200 lbs., with females generally smaller

Kangaroos in the walkabout
Nutrition
Red kangaroos mostly eat plants and are known as browsers. They have a varied diet, but they primarily feed on different types of grasses.

At the Zoo, they are offered alfalfa hay, a specialized pellet, produce, and browse.
Current Range and Historic Range
This species can be found across most of the central part of Australia.
Habitat
Red kangaroos can be found in various habitats in the arid and semi-arid regions of the country, including scrubland, grassland, woodland and desert.
Predators and Threats
Dingoes are the only species that actively prey on red kangaroos. Indigenous Australians have hunted kangaroos for their fur and meat for thousands of years.

Currently, there are no significant threats to this species. They are protected by law throughout their range, and hunting and commercial harvesting are regulated to maintain kangaroo populations and manage them as a renewable resource while addressing agricultural conflicts.
Physical Description and Adaptations
Red kangaroos have thick fur that varies from reddish brown to bluish gray, covering most of their bodies, with lighter, sometimes white underparts. Their faces can be darker, and the tips of their paws, feet, and tails are also dark. They have small heads with large ears that can swivel to hear sounds better. Long eyelashes protect their eyes from dust and sunlight. To cool down when they get too warm, kangaroos pant and lick their chests and the inside of their forearms until these areas are wet. When the moisture evaporates, it cools the blood close to the surface in those spots, helping to keep them cool.

Red kangaroos have powerful hind legs and large hind feet that enable them to move quickly and use less energy, reaching speeds of up to 39 miles per hour. They can leap over 20 feet and as high as eight feet! They hop over long distances in search of food and water and are also excellent swimmers. The back feet have four toes, but the inner two are fused up to the claws. The double claw at the end is used for grooming and defense. While their front legs are much smaller than their back legs, they still help with movement and grasping food. Their long, muscular tails help them balance when hopping and act like a "kickstand" when standing still or moving slowly.

Red kangaroos are marsupials, which means females carry their young in a pouch.
Reproduction
Red kangaroos can breed year-round when the habitat offers enough food and water. Like all marsupials, kangaroos give birth after a short gestation of about 30 days. The baby kangaroo, called a joey, is small and hairless—about the size of a peanut. After it is born, the joey climbs into the pouch on its mother’s belly all by itself, using its tiny arms. Inside the pouch, it attaches to one of the four nipples and stays there to nurse and grow for more than four months.

Around six months old, the joey’s eyes start to open. In the next month, it grows quickly, and its limbs begin to stick out of the pouch. The joey will start to peek out, smelling and exploring its surroundings. When the mother kangaroo bends down to eat, the joey can lean out to nibble on grass and other plants.

By about nine months, the joey will start to spend time outside the pouch but can climb back in. The joey will slowly venture further away from its mother but return to be groomed or to nurse. It will not permanently leave the pouch until around 12 months old, and it will continue to nurse for another nine months or so by sticking its head back into the pouch.

One interesting fact about kangaroo milk is that its nutrition changes based on what the joey needs. This means that the milk produced when the joey is inside the pouch is different from the milk made when it spends time outside. Because of this, a female kangaroo can care for two joeys of different ages at the same time.
Communication
Kangaroos have excellent hearing and use vocal sounds to communicate with each other. Adult kangaroos use clucking sounds to communicate with each other and their young. Competing males and alarmed kangaroos make a deep coughing sound. When grey kangaroos feel threatened, they stamp their back legs on the ground. This stamping, along with the coughing, sends out a warning that can be heard from far away.

Kangaroos also use physical touch for communication, often touching their noses or sniffing to strengthen their social bonds.
Behaviors
Red kangaroos occur in small groups, averaging 10, called "mobs." A typical mob has one dominant male, several females with their offspring, and a few young males. Males in the group engage in boxing matches to establish dominance. The dominant male leads the mob and gets to mate with the females.

Occasionally, large numbers of kangaroos come together at dusk to eat when there is plenty of food available. Kangaroos are most active in the early morning or evening when it is cooler outside. During the hottest part of the day, they like to rest in the shade of trees.