▁Ter rier ▁is ▁an ▁ach ond ro pl astic ▁d war f ▁bre ed . ▁It ▁is ▁more ▁substantial ▁than ▁might ▁be ▁expected ▁from ▁photograph s ; ▁a ▁typical ▁adult ▁Glen ▁we igh s ▁about ▁ 3 6 ▁pounds ▁and ▁stands ▁ 1 4 " ▁tall ▁at ▁the ▁with ers . ▁The ▁A K C ▁bre ed ▁standard ▁spec ifies ▁a ▁height ▁of ▁ 1 2 " ▁to ▁ 1 4 " ▁and ▁a ▁weight ▁of ▁" appro xim ately " ▁ 3 5 ▁pounds ▁for ▁males ▁and ▁" some what ▁less " ▁for ▁females , ▁with ▁a ▁length - to - height ▁ratio ▁of ▁ 5 : 3 . ▁Many ▁champion ▁Gl ens ▁are ▁larger ▁than ▁bre ed ▁standard , ▁with ▁some ▁individuals ▁exceed ing ▁ 4 0 ▁or ▁even ▁ 4 5 ▁pounds . ▁With ▁three ▁growth ▁stages , ▁a ▁Glen ▁can ▁take ▁up ▁to ▁four ▁years ▁to ▁reach ▁full ▁m atur ity . ▁ ▁Gl ens ▁have ▁a ▁large ▁head , ▁with ▁rose ▁or ▁half - pr ick ▁ears ; ▁short , ▁bow ed ▁legs ; ▁and ▁a ▁straight ▁to pl ine ▁that ▁r ises ▁slightly ▁toward ▁the ▁tail . ▁The ▁shoulders , ▁ch est , ▁and ▁h ips ▁are ▁st ur dy ▁and ▁mus cular ▁( the ▁A K C ▁bre ed ▁standard ▁spec ifies ▁an ▁impression ▁of ▁" maxim um ▁subst ance ▁for ▁size ") ▁and ▁the ▁front ▁feet ▁are ▁turned ▁out . ▁The ▁bre ed ▁is ▁considered ▁un ref ined , ▁with ▁ant ique ▁features ▁that ▁were