• Tassel-eared marmosets emit a cricket-like call. When they feel threatened they raise their eyebrows as a display.
• Scientists believe there are as many as 15 living species of gibbon. However, this number is in dispute, in part because of differences in opinion about which species are really separate species and which are merely subspecies.
• The white-handed gibbon (or Lar gibbon) once found in Yunnan province of China, is believed to be extinct in that region as of early 2008. A white-handed gibbon was last seen in Yunnan province in 1988, and their loud, distinctive call was last heard in 1992. It is hoped that the species still exists in other parts of its historical range.
• The Orangutan is one of the official state animals of Sabah Malaysia.
• The Pygmy Slow Loris is currently one of only 181 species protected by the Species Survival Plan (SSP) program, which is administered by the Association of Zoos and Aquariums.
• A chimpanzee can learn to recognize itself in a mirror, but monkeys can’t.

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