▁to ads ", ▁or ▁smaller ▁to ads ▁which ▁are ▁less ▁likely ▁to ▁kill ▁pred ators . ▁These ▁to ads ▁would ▁allow ▁pred ators ▁to ▁learn ▁not ▁to ▁eat ▁the ▁to ads ▁while ▁mit ig ating ▁mort ality . ▁Some ▁have ▁even ▁proposed ▁adding ▁some ▁chemical ▁to ▁make ▁the ▁to ads ▁dist aste ful ▁to ▁further ▁disc ou rage ▁pred ation . ▁These ▁efforts ▁have ▁shown ▁some ▁prom ising ▁results ▁so ▁far . ▁ ▁A ▁study ▁to ▁be ▁published ▁in ▁the ▁E col ogy ▁journal ▁states ▁that ▁the ▁invasion ▁of ▁can e ▁to ads ▁in ▁a ▁case ▁study ▁area ▁caused ▁a ▁tro ph ic ▁cas cade ▁over ▁a ▁period ▁of ▁five ▁years . ▁ ▁The ▁resident ▁pred ators , ▁the ▁monitor ▁l iz ards , ▁a te ▁the ▁can e ▁to ads ▁and ▁died , ▁which ▁resulted ▁in ▁a ▁bo om ▁in ▁the ▁population ▁of ▁the ▁l iz ards ' ▁typical ▁pre y , ▁the ▁crim son ▁fin ches . ▁ ▁Richard ▁Sh ine ▁is ▁using ▁behaviour al ▁condition ing ▁techniques ▁to ▁teach ▁the ▁northern ▁qu oll ▁to ▁avoid ▁can e ▁to ads . ▁ ▁In ▁ 2 0 1 9 , ▁it ▁was ▁found ▁that ▁the ▁native ▁ra k ali ▁or ▁Australian ▁water ▁r ats ▁( H yd rom ys ▁ch rys og aster ) ▁have ▁learned ▁to ▁make ▁an ▁inc ision ▁to ▁eat ▁the ▁can e ▁to ads ' ▁hearts ▁and ▁li vers , ▁while ▁avoid ing ▁their ▁le th al ▁skin ▁and ▁g lands . ▁According ▁to ▁Par rott , ▁Do