▁have ▁been ▁located ▁in ▁secondary ▁for ests ▁as ▁well . ▁ ▁Description ▁Black - sp otted ▁c usc uses ▁compr ise ▁one ▁of ▁the ▁largest ▁species ▁of ▁the ▁family ▁Ph al ang x er idae ; ▁only ▁sur pass ed ▁in ▁size ▁by ▁the ▁bear ▁c us cus . ▁Ad ult ▁black - sp otted ▁c usc uses ▁we igh ▁approximately ▁ 6 ▁to ▁ 7   kg ▁( 1 3 ▁to ▁ 1 5   lb ) ▁on ▁average . ▁Typ ically , ▁they ▁are ▁ 1 2 0   cm ▁in ▁length , ▁with ▁the ▁head ▁and ▁body ▁meas uring ▁approximately ▁ 7 0   cm , ▁and ▁the ▁tail ▁meas uring ▁ 5 0   cm . ▁▁▁ ▁Both ▁adult ▁males ▁and ▁females ▁exhib it ▁red ▁and ▁black ▁fur ▁that ▁is ▁dense ▁and ▁w ool ly . ▁However , ▁females ▁are ▁bigger ▁and ▁have ▁a ▁uniformly ▁dark , ▁s addle - like ▁color ation , ▁while ▁males ▁have ▁spot ty ▁color ations . ▁ ▁The ▁pel ages ▁of ▁the ▁young ▁transform ▁through ▁a ▁series ▁of ▁colors ▁during ▁m atur ation . ▁The ▁unders ides ▁of ▁black - sp otted ▁c usc uses ▁have ▁areas ▁of ▁yellow ▁and ▁white . ▁Fem ales ▁possess ▁four ▁m amma e ▁and ▁modified ▁p ouch es ▁for ▁ne on ates ▁that ▁open ▁anterior ly . ▁ ▁Black - sp otted ▁c usc uses ▁have ▁round ▁heads ▁with ▁a ▁short , ▁pointed ▁sn out . ▁The ▁front al ▁sk ull ▁b ones ▁are ▁convex , ▁which