, ▁David ' s ▁friend ▁who ▁goes ▁with ▁him ▁on ▁his ▁search ▁for ▁Jane . ▁ ▁Lin us ▁Ro ache ▁( un cred ited ) ▁ ▁A pe ▁Act ors ▁ ▁Lock e ▁as ▁Link , ▁a ▁ 4 5 ▁year ▁old ▁circ us ▁ch imp ▁who ▁now ▁serves ▁as ▁Phill ip ' s ▁but ler ▁and ▁l ash es ▁out ▁against ▁his ▁human ▁master s . ▁Despite ▁being ▁written ▁to ▁be ▁a ▁ch imp anze e ▁and ▁having ▁a ▁poster ▁of ▁his ▁old ▁circ us ▁days ▁as ▁a ▁ch imp , ▁the ▁role ▁was ▁given ▁to ▁Lock e ▁who ▁is ▁an ▁or ang ut an . ▁His ▁fur ▁was ▁dy ed ▁dark er ▁and ▁wore ▁prost h etic ▁ears ▁to ▁make ▁him ▁res emble ▁a ▁ch imp . ▁He ▁was ▁owned ▁and ▁trained ▁by ▁legend ary ▁animal ▁tra iner ▁Ray ▁Ber wick . ▁ ▁Car rie ▁as ▁V ood oo , ▁a ▁female ▁ch imp anze e ▁who ▁is ▁often ▁c aged ▁for ▁her ▁ag gress ive ▁nature , ▁but ▁is ▁occasionally ▁let ▁loose . ▁This ▁is ▁one ▁of ▁the ▁few ▁times ▁a ▁full ▁grown ▁ch imp anze e ▁is ▁used ▁in ▁a ▁film . ▁ ▁Jed ▁as ▁Imp , ▁V ood oo ' s ▁son ▁and ▁Phill ip ' s ▁pri zed ▁student ▁in ▁his ▁studies . ▁He ▁has ▁a ▁t endency ▁to ▁escape ▁and ▁kill ▁other ▁animals ▁( bird s , ▁c ats , ▁sheep ). ▁ ▁Production ▁In ▁ 1 9 7 9 ▁Richard ▁Franklin ▁option ed ▁a ▁short