B P ) ▁in ▁B ingham ▁County , ▁Id aho ▁were ▁similar ▁to ▁the ▁Ber ing ian ▁wol ves . ▁The ▁Mexican ▁w olf ▁and ▁pre - 1 9 0 0 ▁samples ▁of ▁the ▁Great ▁Pla ins ▁w olf ▁( Can is ▁l up us ▁n ub ilus ) ▁res emble d ▁the ▁Late ▁Ple ist oc ene ▁and ▁Hol oc ene ▁foss il ▁gray ▁wol ves ▁due ▁to ▁their ▁shorter ▁legs . ▁ ▁Hy brid ization ▁with ▁co y otes ▁and ▁red ▁wol ves ▁ ▁Un like ▁eastern ▁wol ves ▁and ▁red ▁wol ves , ▁the ▁gray ▁w olf ▁species ▁rarely ▁inter bre eds ▁with ▁co y otes ▁in ▁the ▁wild . ▁Direct ▁hy brid izations ▁between ▁co y otes ▁and ▁gray ▁wol ves ▁was ▁never ▁explicitly ▁observed . ▁Nevertheless , ▁in ▁a ▁study ▁that ▁analyz ed ▁the ▁mole cular ▁gen et ics ▁of ▁the ▁co y otes ▁as ▁well ▁as ▁samples ▁of ▁historical ▁red ▁wol ves ▁and ▁Mexican ▁wol ves ▁from ▁Texas , ▁a ▁few ▁co y ote ▁gen etic ▁markers ▁have ▁been ▁found ▁in ▁the ▁historical ▁samples ▁of ▁some ▁isolated ▁individual ▁Mexican ▁wol ves . ▁Like wise , ▁gray ▁w olf ▁Y - chrom os om es ▁have ▁also ▁been ▁found ▁in ▁a ▁few ▁individual ▁male ▁Tex an ▁co y otes . ▁This ▁study ▁suggested ▁that ▁although ▁the ▁Mexican ▁gray ▁w olf ▁is ▁generally ▁less ▁pr one ▁to ▁hy brid izations ▁with ▁co y otes ▁compared ▁to ▁the ▁red ▁w olf , ▁there ▁may ▁have ▁been ▁exception al ▁gen etic