
- Status: Endangered
- Rainforests of Borneo, from lowlands up to 5,000 feet
Numbers
- Weight
- 165 lbaverage for wild males, from 110 to 220 lb; females weigh an average of 85 lb
- Length
- 4,6 ftfrom 4 to 5 ft
- Height
- 4,8 ftmales from 4 to 5.5 ft; females from 3.3 to 4 ft
- Lifespan
- 40 yearsthe material states 35 to 40 years in one passage and 35 to 45 in another; up to about 60 in captivity
- Arm span
- 6,5 ftexceeds the standing height of the animal
- Longevity in captivity
- 60 yearscompared to 35 to 40 years in the wild
- Record weight in captivity
- 450 lbobese male named Andy, in 1959, at thirteen years of age
Ten fun facts
an orangutan has an opposable big toe, so its feet function like hands to give it an extremely strong grip on branches.
an orangutan has an arm span that can exceed seven feet, which is significantly longer than its entire standing body height.
sixty percent of an orangutan's diet is wild fruit, including lychees, rambutans, breadfruit, mangos, and stink-scented durians.
figs are the most crucial food source for orangutans because different species ripen at various times throughout the year.
adult male orangutans develop very wide fleshy cheek pads and a large throat pouch that amplifies their loud calls.
the long reddish hair on an orangutan's shoulders forms a cape-like layer that helps shed heavy tropical rainforest rain.
a captive male named Andy weighed four hundred and fifty pounds in 1959, when he was only thirteen years old.
young orangutans stay with their mother for seven or eight years and can show jealousy when a new sibling arrives.
by observing humans, captive orangutans can learn to perform human actions like hammering a nail or sawing a piece of wood.
the first complete orangutan skeleton was discovered in Vietnam, showing that these apes once inhabited mainland Asia.
The quiz answers
The first one is the question printed in your book: here is the answer. The other four are extra.
Question 1 of 5★ this one is in your book
Where does the Bornean orangutan live?
Question 2 of 5
How much of its diet consists of wild fruit?
Question 3 of 5
Why are figs so important for the orangutan?
Question 4 of 5
How long does a young orangutan stay with its mother?
Question 5 of 5
How long does a Bornean orangutan live in the wild?
Try it yourself
Stretch out your arms and ask a friend to measure your span: an adult orangutan reaches over seven feet. How close can you get to that?
Try picking up an object from the floor using only your feet: an orangutan can do this easily because its big toe works like a human thumb.
Make a list of fruits available at the market during each month of the year: this mimics the mental map a young orangutan learns from its mother.
Data from Wikidata (Q599672) and Wikipedia (Bornean orangutan).
