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up-close shot of siamang monkey sitting on branch
All Animals


These are the apes you may hear calling all the way across the zoo. Siamangs vocalize by singing loud, complex hoots, barks, and screams that are amplified by their inflatable throat sac. They live in Southeast Asian forests and eat leaves, flowers, and fruits.


Animal Facts

Scientific Name

Symphalangus syndactylus


Malay peninsula and Sumatra

Location in the Zoo

Wortham World of Primates

Cool Animal Fact

Their calls establish territory and reinforce the bond between a male and female. Calls can be heard as much as a mile through the dense forest.