Male Siamangs are slightly bigger than female Siamangs.
Siamang gibbons have been swinging at the top of trees for many years.
The Siamangs have a throat sac that can inflate to the size of their head. It makes their voices louder. Their voices can travel up to 3 kilometres
Siamang Gibbons are found on the island of Sumatra. Siamangs are omnivores... they eat lots of fruit which is 75% of their diet.
They have a big tail and long arms to help them swing around.
Jaw Dropping Facts:
The Siamang Gibbons real name is Hylobates Syndactylus. There hands are called brachiations. They weigh up to 13kg.
There are more than 1,000 left in the world. In 100 years there is a 20% chance that Siamang Gibbons might be extinct
I hope there will always be Siamang Gibbons on earth.