▁their ▁body ▁weight ▁effectively ▁dil utes ▁the ▁concentration ▁of ▁the ▁to x in ▁in ▁their ▁body . ▁One ▁native ▁species , ▁the ▁Tor res ian ▁crow , ▁has ▁learned ▁how ▁to ▁kill ▁and ▁eat ▁can e ▁to ads ▁without ▁ing est ing ▁the ▁poison ▁by ▁f li pping ▁it ▁onto ▁its ▁back ▁and ▁using ▁its ▁powerful ▁bill ▁to ▁deliver ▁a ▁le th al ▁blow ▁to ▁the ▁thro at ▁where ▁the ▁to ad ' s ▁skin ▁is ▁th inner , ▁giving ▁the ▁crow ▁access ▁to ▁the ▁to ad ' s ▁non - to xic ▁inn ards . ▁In ▁ 2 0 1 4 ▁research ers ▁found ▁evidence ▁that ▁the ▁Australian ▁F resh water ▁Cro cod ile ▁( C roc ody lus ▁j ohn st oni ) ▁had ▁learned ▁to ▁eat ▁just ▁the ▁h ind ▁legs ▁of ▁can e ▁to ads . ▁One ▁research ▁study ▁concluded ▁that ▁in ▁less ▁than ▁ 7 5 ▁years ▁the ▁red - bel lied ▁black ▁s nake ▁had ▁evol ved ▁in ▁to ad - in hab ited ▁regions ▁of ▁Australia ▁to ▁have ▁increased ▁resistance ▁to ▁to ad ▁to x in ▁and ▁decre ased ▁preference ▁for ▁to ads ▁as ▁pre y . ▁ ▁There ▁is ▁evidence ▁for ▁native ▁pred ator ▁species ▁adapt ing ▁to ▁the ▁presence ▁of ▁the ▁can e ▁to ad , ▁through ▁learning ▁or ▁evolution ary ▁selection . ▁However , ▁the ▁initial ▁drop ▁in ▁population ▁is ▁often ▁ste ep ▁and ▁can ▁reduce ▁b iod iversity ▁on ▁a ▁population ▁level . ▁One ▁proposed ▁solution ▁is ▁to ▁use ▁" te acher