. ▁It ▁is ▁also ▁found ▁in ▁Asia , ▁and ▁east ward ▁to ▁Japan . ▁ ▁The ▁common ▁f rog ▁has ▁long ▁been ▁thought ▁to ▁be ▁an ▁entirely ▁introduced ▁species ▁in ▁Ireland , ▁however , ▁gen etic ▁anal ys es ▁suggest ▁that ▁particular ▁populations ▁in ▁the ▁south ▁west ▁of ▁Ireland ▁are ▁indeed ▁ind igen ous ▁to ▁the ▁country . ▁The ▁authors ▁propose ▁that ▁the ▁Irish ▁f rog ▁population ▁is ▁a ▁mixed ▁group ▁that ▁includes ▁native ▁fro gs ▁that ▁surv ived ▁the ▁last ▁gla cial ▁period ▁in ▁ice ▁free ▁ref ug ia , ▁natural ▁post - g la cial ▁colon is ers ▁and ▁recent ▁artificial ▁introdu ctions ▁from ▁Western ▁Europe . ▁ ▁Hab itat ▁Out side ▁the ▁bre eding ▁season , ▁common ▁fro gs ▁live ▁a ▁solit ary ▁life ▁in ▁d amp ▁places ▁near ▁p onds ▁or ▁mar sh es ▁or ▁in ▁long ▁grass . ▁They ▁are ▁normally ▁active ▁for ▁much ▁of ▁the ▁year , ▁only ▁hi bern ating ▁in ▁the ▁col dest ▁months . ▁In ▁the ▁most ▁northern ▁extrem ities ▁of ▁their ▁range ▁they ▁may ▁be ▁tra pped ▁under ▁ice ▁for ▁up ▁to ▁nine ▁months ▁of ▁the ▁year , ▁but ▁recent ▁studies ▁have ▁shown ▁that ▁in ▁these ▁conditions ▁they ▁may ▁be ▁relatively ▁active ▁at ▁temper atures ▁close ▁to ▁free zing . ▁In ▁the ▁British ▁Is les , ▁common ▁fro gs ▁typically ▁hibernate ▁from ▁late ▁October ▁to ▁January . ▁They ▁will ▁re - emer ge ▁as ▁early ▁as ▁February ▁if ▁conditions ▁are ▁fav ou rable , ▁and ▁migr ate ▁to ▁bodies ▁of ▁water ▁such ▁as