| 1. | Among the animals featured was a pair of endangered Siamang gibbons.
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| 2. | _For the siamang gibbons of Indonesia, marital harmony requires just that.
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| 3. | The sounds used for the monkeys were actually those of chimps and siamangs.
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| 4. | Hoolocks are the second-largest of the gibbons, after the siamang.
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| 5. | Besides that, living, big, and tall trees can support siamang movement.
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| 6. | Siamang duetting differs from other species because it has a particularly complex vocal structure.
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| 7. | The exhibit provided new homes for the zoo's siamangs and pygmy marmosets.
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| 8. | The siamang is distinctive for two reasons.
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| 9. | Two subspecies of the siamang may exist.
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| 10. | In January 2015, siamang gibbon, Iwani was euthanased due to ongoing welfare issues.
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