who do you call crazy hanging monkey in rain forest borneo

adorable adult animal ape borneo call chordata crazy cute danum deramakot endangered expression expressive face fauna forest fun fur hair hairy hanging hominid hominidae indonesia jantho jungle kalimantan malaysia male mammal monkey nature orang orange orangutan orangutang park playful primate primitive rain rainforest rehabilitation sabah sepilok species sumatra swing swinging utan who wild wildlife zoo