This primate of Indonesia is the only ape whose name begins with an "O"
[DOC] [TLE] Ape - Wikipedia [PAR] Apes (Hominoidea) are a branch of Old World tailless anthropoid primates native 
to Africa and .... Two tailless species of macaque still have common names using 
"ape": the Barbary ... or they may use the term "ape" to just mean the non-human 
hominoids.