Medium-sized and large mammals of the pine-oak forests and grasslands of the Rancho Experimental Teseachi in Chihuahua, Mexico Author Álvarez-Córdova, Fernando Author Fernández, Jesús A. text Check List 2021 2021-04-20 17 2 669 681 http://dx.doi.org/10.15560/17.2.669 journal article 10.15560/17.2.669 1809-127X Puma concolor (Linnaeus, 1771) Cougar, Mountain Lion Figure 2E Material examined. MEXICO – Chihuahua • 1; Municipality of Namiquipa ; 28°47′18″N , 107°28′36″W ; eleva- tion 2,121 m a.s.l. ; 14 October 2019 ; obs. F. Álvarez-Córdova ; UACH-CF-6119 . Identification. This is a large cat with a long tail and no spots. The head and ears are small and rounded. The dorsal color is reddish brown, and the underparts are whitish ( Currier 1983 ). Distribution. Central, southwestern Canada ; central, northwest USA , through most of Mexico to southern South America ( Currier 1983 ). Recorded habitats in Chihuahua are quebradas, sierras, and valleys. Remarks. Puma is the second largest felid in Mexico , second only to Jaguar, Panthera onca (Linnaeus, 1758) . Based on current records for Chihuahua (López- González and García-Mendoza 2012), both species are not sympatric because Jaguar records are restricted to the quebradas.