ure ▁Canada ▁is ▁pending . ▁ ▁Report edly , ▁the ▁Glen ' s ▁history ▁began ▁during ▁the ▁reign ▁of ▁Elizabeth ▁I , ▁who ▁h ired ▁French ▁and ▁H ess ian ▁mer cen aries ▁to ▁put ▁down ▁a ▁re bell ion ▁in ▁Ireland . ▁After ▁the ▁conflict , ▁many ▁of ▁these ▁soldiers ▁settled ▁in ▁the ▁W ick low ▁area . ▁They ▁brought ▁with ▁them ▁their ▁low - sl ung ▁h ounds , ▁which ▁they ▁b red ▁with ▁the ▁local ▁ter rier ▁stock , ▁eventually ▁developing ▁a ▁distinct ive ▁bre ed ▁that ▁became ▁known ▁as ▁the ▁Glen ▁of ▁I ma al ▁Ter rier . ▁ ▁Gl ens ▁were ▁originally ▁used ▁for ▁er adic ating ▁other ▁animals ▁such ▁as ▁rat , ▁fo x , ▁bad ger , ▁and ▁ot ter , ▁and ▁also ▁as ▁a ▁general - pur pose ▁farm ▁dog ▁for ▁her ding ▁and ▁family ▁companion ship . ▁Un like ▁many ▁other ▁ter riers , ▁they ▁are ▁" strong ▁dogs " ▁rather ▁than ▁" sound ers " — they ▁were ▁b red ▁to ▁work ▁m ute ▁to ▁ground , ▁going ▁sil ently ▁into ▁dens ▁after ▁their ▁quar ry ▁rather ▁than ▁b ark ing ▁at ▁it ▁to ▁alert ▁their ▁handlers . ▁In ▁hunting ▁tri als , ▁which ▁used ▁to ▁be ▁required ▁by ▁many ▁k enn el ▁clubs ▁for ▁champion ships , ▁Gl ens ▁were ▁dis qual ified ▁if ▁they ▁sound ed ▁at ▁the ▁quar ry . ▁For ▁this ▁reason , ▁today ▁they ▁are ▁among ▁the ▁quiet est ▁ter riers . ▁ ▁According ▁to ▁Irish ▁l ore