- Class: Mammalia
- Order: Primates
- Super family: Hominoidea
- Family: Pongidae
- Genus: Pongo
- Species: abelii (Sumatran), pygmaeus (Bornean), tapanuliensis (Tapanuli)
- Length: males - about 40 inches from top of head to rump; females - about 30 inches
- Weight: males - 110 to 300 pounds; females - 66 to 110 pounds
- Life Span: 60 years or more
- Gestation: about 8.5 months
- Number of Young at Birth: usually 1, very rarely 2 (in captivity)
- Size at Birth: 3.3 to 4.5 pounds
- Interbirth Interval: 8-9 years (in the wild)
- Age of Maturity: males - about 15 years; females - about 12 (in captivity)
- Conservation Status: Pongo pygmaeus (Bornean) is endangered; Pongo abelii (Sumatran) is critically endangered
VISIT THE IUCN RED LIST OF THREATENED SPECIES FOR MORE INFORMATION ABOUT ALL 3 SPECIES OF ORANGUTANS