One of the most common animals in Borneo. You’re pretty much guaranteed to see one.

In fact, you might say it’s a gibbon.

*Disclaimer: Sadly, this is not a factual pun. The Grey Gibbon’s population has decreased by 50% over the last half-century and they are now considered endangered. One of the fastest movers through the treetops, and with remarkably expressive faces, these creatures are a joy to see in the wild.

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Grey gibbon/Müller’s gibbon (Hylobates muelleri), Danum Valley, Borneo