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9th Annual Smithsonian Magazine Photo Contest Natural World
The unhappiness and frustration of a Siamang on display at the Dubbo Zoo, Australia. The gular sac in its neck is inflated when it wants to make especially loud and angry noises. It succeeded in prote

The unhappiness and frustration of a Siamang on display at the Dubbo Zoo, Australia. The gular sac in its neck is inflated when it wants to make especially loud and angry noises. It succeeded in protesting against its captivity.

Photo Detail
Date Taken: 06.2011
Date Uploaded: 10.2011
Photo Location: Australia
Camera: Canon EOS 400D DIGITAL
Copyright: © Will Swanton