iving ▁people ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) <0x0A> </s> ▁The ▁Mexican ▁w olf ▁( Can is ▁l up us ▁ba iley i ), ▁also ▁known ▁as ▁the ▁lo bo , ▁is ▁a ▁sub species ▁of ▁gray ▁w olf ▁once ▁native ▁to ▁sout he astern ▁Arizona , ▁southern ▁New ▁Mexico , ▁western ▁Texas ▁and ▁northern ▁Mexico . ▁It ▁is ▁the ▁smallest ▁of ▁North ▁America ' s ▁gray ▁wol ves , ▁and ▁is ▁similar ▁to ▁C . ▁l . ▁n ub ilus , ▁though ▁it ▁is ▁distinguished ▁by ▁its ▁smaller , ▁nar ro wer ▁sk ull ▁and ▁its ▁dark er ▁p elt , ▁which ▁is ▁yellow ish - gray ▁and ▁heavily ▁cloud ed ▁with ▁black ▁over ▁the ▁back ▁and ▁tail . ▁Its ▁ancest ors ▁were ▁likely ▁the ▁first ▁gray ▁wol ves ▁to ▁enter ▁North ▁America ▁after ▁the ▁ext inction ▁of ▁the ▁Ber ing ian ▁w olf , ▁as ▁indicated ▁by ▁its ▁southern ▁range ▁and ▁bas al ▁physical ▁and ▁gen etic ▁characteristics . ▁ ▁Though ▁once ▁held ▁in ▁high ▁regard ▁in ▁Pre - Col umb ian ▁Mexico , ▁it ▁is ▁the ▁most ▁end anger ed ▁gray ▁w olf ▁in ▁North ▁America , ▁having ▁been ▁ext ir p ated ▁in ▁the ▁wild ▁during ▁the ▁mid - 1 9 0 0 s ▁through ▁a ▁combination ▁of ▁hunting , ▁tra pping , ▁poison ing ▁and ▁dig ging ▁pu ps ▁from ▁dens . ▁After ▁being ▁listed ▁under ▁the ▁End anger ed ▁Species ▁Act ▁in ▁ 1 9 7 6 , ▁the ▁United ▁States ▁and