rier , ▁Py rene an ▁M ast iff , ▁English ▁Po inter , ▁Irish ▁Wolf h ound ▁and ▁Dog ue ▁de ▁Bor de aux . ▁N ores ▁Mart ine z ▁continued ▁to ▁develop ▁the ▁bre ed ▁via ▁select ive ▁bre eding ▁to ▁introduce ▁the ▁desired ▁tra its . ▁ ▁In ▁ 1 9 7 0 ▁Dr . ▁Ra ul ▁Z eb all os ▁brought ▁the ▁first ▁six ▁spec im ens ▁of ▁Argent ine ▁D ogo ▁to ▁the ▁United ▁States . ▁ ▁Tem per ament ▁ ▁Dog os ▁are ▁big - game ▁hun ters ▁and ▁are ▁also ▁trained ▁for ▁search ▁and ▁rescue , ▁police ▁assistance , ▁service ▁dogs , ▁guide ▁for ▁the ▁blind , ▁compet itive ▁ob ed ience , ▁Schutz h und ▁and ▁military ▁work . ▁ ▁The ▁D ogo ▁is ▁an ▁intellig ent ▁and ▁courage ous ▁dog ▁with ▁a ▁strong , ▁natural ▁instinct ▁to ▁protect ▁its ▁home ▁and ▁family . ▁Dog os ▁are ▁very ▁social ▁dogs ▁and ▁are ▁happ iest ▁when ▁included ▁in ▁all ▁family ▁activities . ▁Dog os ▁make ▁a ▁strong ▁distinction ▁between ▁familiar ▁people ▁and ▁str angers , ▁so ▁it ▁is ▁imper ative ▁that ▁they ▁be ▁well ▁trained ▁and ▁social ized ▁at ▁an ▁early ▁age . ▁ ▁Dog os ▁are ▁hun ters ▁of ▁great ▁courage ▁and ▁end urance , ▁and ▁will ▁work ▁individually ▁or ▁in ▁pack s . ▁They ▁have ▁also ▁successfully ▁been ▁used ▁in ▁police ▁protection ▁work . ▁An ▁un st ead y ▁temper ament ▁is ▁a ▁serious ▁fault . ▁{ UK C ▁Bre ed ▁Standard } ▁The ▁D