ena ▁for ▁the ▁annual ▁" Ro yal ▁Hor se ▁Show " ▁e quest rian ▁competition , ▁as ▁well ▁as ▁animal ▁present ations . ▁ ▁Each ▁year ▁in ▁August , ▁the ▁Col ise um ▁is ▁used ▁by ▁the ▁C NE ▁for ▁exhib its ▁and ▁performances . ▁It ▁has ▁in ▁the ▁past ▁used ▁for ▁C NE ▁cat , ▁dog ▁and ▁horse ▁shows . ▁Until ▁ 2 0 1 3 , ▁the ▁C NE ▁held ▁the ▁C NE ▁Hor se ▁Show , ▁a ▁compet itive ▁event ▁in ▁the ▁Col ise um . ▁At ▁one ▁time ▁run ▁during ▁the ▁Ex , ▁it ▁changed ▁to ▁be ▁a ▁pre - C NE ▁event ▁in ▁ 2 0 0 5 . ▁It ▁has ▁been ▁used ▁by ▁the ▁Royal ▁Canadian ▁Mount ed ▁Police ▁Musical ▁R ide . ▁During ▁the ▁ 2 0 0 9 , ▁ 2 0 1 0 ▁and ▁ 2 0 1 1 ▁C NE , ▁it ▁was ▁used ▁for ▁a ▁figure ▁sk ating ▁show . ▁ ▁The ▁ar ena ▁is ▁also ▁used ▁for ▁trade ▁shows . ▁The ▁annual ▁Bo at ▁Show ▁builds ▁an ▁ind oor ▁p ond ▁over ▁the ▁ar ena ▁floor . ▁ ▁Ice ▁hockey ▁As ▁early ▁as ▁the ▁ 1 9 7 0 s , ▁plans ▁were ▁flo ated ▁to ▁out fit ▁C NE ▁Col ise um ▁for ▁ice ▁hockey . ▁When ▁the ▁World ▁Hockey ▁Association ' s ▁Ott awa ▁National s ▁moved ▁to ▁Toronto ▁as ▁the ▁Toronto ▁Tor os , ▁they ▁initially ▁wanted ▁to ▁play ▁at ▁a ▁renov ated ▁C NE ▁Col ise um