 Slow lorises are slow and deliberate climbers , and often hold on to branches with three of their four limbs . To move between trees , they carefully grip the terminal branches of the neighboring tree and pull themselves across the small gap . They will also grip branches with only their hind feet , lift themselves upright , and quickly launch forward with their hands to catch prey . Due to their slow movement , all lorises , including the slow lorises , have a specially adapted mechanism for defense against predation . Their slow , deliberate movement hardly disturbs the vegetation and is almost completely silent . Once disturbed , they immediately stop moving and remain motionless . In Indonesia , slow lorises are called malu malu or " shy one " because they freeze and cover their face when spotted . If cornered , they may adopt a defensive posture by curling up and lunging at the predator . The Acehnese name , <unk> <unk> ( " wind monkey " ) , refers to their ability to " fleetingly but silently escape " . Little is known about the predation of slow lorises . Documented predators include snakes , the changeable hawk @-@ eagle ( <unk> cirrhatus ) , and Sumatran orangutans ( Pongo abelii ) . Other potential predators include cats , sun bears ( Ursus <unk> ) , <unk> ( <unk> binturong ) , and civets . 
