▁wol ves ▁and ▁dogs ▁is ▁a ▁common ▁event ▁in ▁the ▁areas ▁where ▁large ▁liv est ock ▁guard ian ▁dogs ▁are ▁held ▁in ▁a ▁traditional ▁way , ▁and ▁that ▁gene ▁flow ▁between ▁dogs ▁and ▁gray ▁wol ves ▁was ▁an ▁important ▁force ▁influen cing ▁gene ▁pool ▁of ▁dogs ▁for ▁mill enn ia ▁since ▁early ▁domestic ation ▁events . ▁ ▁Wolf d ogs ▁in ▁the ▁wild ▁Hy brid ization ▁between ▁wol ves ▁and ▁dogs ▁typically ▁occurs ▁when ▁the ▁w olf ▁population ▁is ▁under ▁strong ▁hunting ▁pressure ▁and ▁its ▁structure ▁is ▁dis rupted ▁due ▁to ▁a ▁high ▁number ▁of ▁free - r anging ▁dogs . ▁Wol ves ▁typically ▁display ▁ag gress iveness ▁toward ▁dogs , ▁but ▁a ▁w olf ▁can ▁change ▁its ▁behaviour ▁and ▁become ▁play ful ▁or ▁sub miss ive ▁when ▁it ▁becomes ▁soci ally ▁isolated . ▁In ▁ 2 0 1 9 , ▁in ▁the ▁Os og ovo ▁mountain ous ▁region ▁along ▁the ▁border ▁between ▁Bulg aria ▁and ▁North ▁Mac ed onia , ▁a ▁put ative ▁grey ▁w olf ▁was ▁recorded ▁by ▁camera ▁to ▁be ▁living ▁with ▁a ▁pack ▁of ▁ 1 0 ▁fer al ▁dogs , ▁and ▁by ▁its ▁behaviour ▁and ▁phen ot ype ▁was ▁assumed ▁- ▁but ▁not ▁confirmed ▁- ▁to ▁be ▁a ▁w olf - dog ▁hy brid . ▁▁ ▁Ad mi xture ▁in ▁the ▁wild ▁usually ▁occurs ▁near ▁human ▁habit ations ▁where ▁w olf ▁density ▁is ▁low ▁and ▁dogs ▁are ▁common . ▁However , ▁there ▁were ▁several ▁reported ▁cases ▁of ▁w olf d ogs ▁in ▁areas ▁with ▁normal ▁w olf ▁dens