▁( like ▁de er ) ▁fle e ▁to ▁una ffect ed ▁regions , ▁not ▁because ▁they ▁notice ▁the ▁radiation , ▁but ▁because ▁of ▁the ▁lack ▁of ▁food . ▁ ▁( 1 0 ▁days ▁– ▁ 1 ▁month ▁A . H .) ▁Hun gry ▁dogs ▁from ▁cities ▁fle e ▁to ▁the ▁coun tr ys ide ▁to ▁fe ast ▁on ▁dead ▁da iry ▁c ows . ▁Six ▁days ▁after ▁their ▁water ▁and ▁food ▁supplies ▁began ▁ending , ▁da iry ▁c ows ▁have ▁completely ▁finished ▁them ▁and ▁died . ▁Now , ▁their ▁ro tt ing ▁car c ass es ▁will ▁do ▁nothing ▁more ▁than ▁sust ain ▁hun gry ▁dogs . ▁On ▁the ▁other ▁hand , ▁not ▁all ▁c ows ▁are ▁dead . ▁Be ef ▁cattle ▁surv ive ▁and ▁form ▁her ds ▁that ▁th rive ▁in ▁places ▁like ▁the ▁North ▁American ▁Great ▁Pla ins ▁and ▁the ▁open ▁past ures ▁in ▁the ▁middle - e astern ▁U . S . ▁ ▁The ▁last ▁domestic ▁ch ick ens ▁are ▁ex termin ated ▁by ▁pred ators , ▁while ▁f ow l ▁such ▁as ▁some ▁domestic ▁game , ▁gu ine as , ▁and ▁pe af ow l ▁are ▁still ▁alive . ▁M ice ▁and ▁r ats ▁take ▁over ▁abandoned ▁super mark ets , ▁where ▁their ▁population ▁expl odes ▁thanks ▁to ▁the ▁abund ance ▁of ▁food . ▁This ▁pattern ▁will ▁continue ▁for ▁the ▁next ▁few ▁months ▁until ▁the ▁reduction ▁of ▁food ▁and ▁the ▁action ▁of ▁pred ators ▁like ▁c ats ▁regul ates ▁their ▁populations ▁again . ▁S qu ir rel s ,