Sumatran Orangutan Society
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Answer: Male orangutans can be up to 1.5 metres tall and weigh up to 120kg (heavier than an average adult human). Females are a lot smaller; they can be up to 1 metre tall and weigh up to 45kg.
7. How many Sumatran orangutans are left in the wild?
7,000
10,000
20,000