Red Kangaroo (Osphranter rufus) Fact Sheet: Summary

Kingdom: Animalia

Phylum: Chordata

Class: Mammalia

Order: Diprotodontia

Family: Macropodidae

Genus: Osphranter

Species: Osphranter rufus — red kangaroo

Body Weight
Male: 22-92 kg (49-203 lb)
Female: 17-39 kg (37-86 lb)

Head-body Length
Male: 93.5-140 cm (3.07-4.6 ft)
Female: 74.5-110 cm (2.44-3.6 ft)

Tail Length
Male: 71-100 cm (2.4-3 ft)
Female: 64.5-90 cm (2.11-3 ft)

Pelage
Blue-grey to red on back; white on belly.

Range
Arid regions of inland Australia

Habitat
Prefer open, grassy plains with trees that provide shade. Also use shrublands, grasslands, and deserts.

IUCN Status
Least Concern (2015 assessment)

CITES Appendix
Not listed

Population in Wild
5.8 million (in 2017)

Locomotion
Hop; foot thump, good swimmers. Tail used for balance.

Activity Cycle
Rest and feed most of the day. Most active after dawn and before dusk.

Social Groups
Average group size: 2-3 (range: 2-10). Groups ephemeral. Sedentary when possible.

Diet
Grasses and other plants

Predators
Adult red kangaroos: dingos and humans
Young red kangaroos: foxes, feral cats, raptors

Sexual Maturity
Females: from 15 months; most around 30 months
Males: from 24 months; 28-39 months or later

Gestation
About 33 days; young spend 7.5-8 months in pouch

Litter Size
Usually 1; 2 occasionally reported

Interbirth Interval
Varies with drought and environmental conditions. About every 240 days when vegetation is lush. With rainfall, mating resumes within days of giving birth.

Birth Weight
1 g (0.03 oz)

Age at Weaning
About 12 months

Typical Life Expectancy
Managed care: median life expectancy of about 8 years for males and 10 years for females

Feature Facts

• Largest kangaroo species
• Expend less energy the faster they hop
• Unlike most other kangaroos, male and female red kangaroos have coats of different colors
• Can turn ears 180°
• Dominance established by comparing body size and scent
• Incredible tolerance to heat
• During drought, rain stimulates female ovulation
• Distribution of red kangaroos increased as humans redirected water for livestock and crops
• Populations managed by Australian government; large-scale hunts for kangaroo meat and skins