▁wh ip ▁in ▁both ▁hands ). ▁ ▁He ▁re ared , ▁knock ing ▁over ▁several ▁reflect ors ▁and ▁causing ▁the ▁cast ▁and ▁crew ▁to ▁scatter ▁for ▁cover . ▁R ex ▁ch ased ▁one ▁actor , ▁Er nie ▁Adams , ▁who ▁attempted ▁to ▁hide ▁under ▁a ▁car . ▁R ex ▁dropped ▁to ▁his ▁kne es ▁and ▁attempted ▁to ▁b ite ▁Adams ▁with ▁his ▁head ▁thrust ▁side ways ▁under ne ath ▁the ▁car . ▁ ▁Lind ell ▁managed ▁to ▁call ▁R ex ▁off ▁by ▁simply ▁crack ing ▁the ▁wh ip , ▁after ▁which ▁the ▁horse ▁calm ly ▁walked ▁over ▁to ▁him . ▁ ▁When ▁William ▁Wit ney , ▁working ▁as ▁an ▁assistant ▁director ▁on ▁the ▁serial , ▁made ▁Str anger ▁at ▁My ▁Do or ▁( 1 9 5 6 ▁film ) ▁he ▁described ▁the ▁event ▁to ▁tra iner ▁Glen ▁Rand all ▁and ▁the ▁scene ▁was ▁re created ▁for ▁that ▁movie . ▁ ▁The ▁ 1 9 3 6 ▁serial ▁Robinson ▁Cr us oe ▁of ▁C li pper ▁Island ▁features ▁R ex , ▁but ▁he ▁appears ▁in ▁only ▁some ▁of ▁the ▁chap ters ; ▁two ▁look - ali ke ▁horses ▁double ▁for ▁him . ▁The ▁real ▁R ex ▁has ▁a ▁small ▁white ▁mark ▁on ▁his ▁fore head , ▁just ▁under ▁his ▁man e . ▁ ▁Film ography ▁ ▁The ▁King ▁of ▁the ▁Wild ▁H ors es ▁( 1 9 2 4 ) ▁Black ▁Cy clone ▁( 1 9 2 5 ) ▁The ▁Dev il ▁Hor se ▁( 1 9 2 6 ) ▁Wild ▁Beaut y ▁(