Comments:A Western isogloss. Mong. > Chag. kačir 'mule' etc. (see VEWT 217). The Mong. form itself may have been borrowed from Turk. (see Щербак 1997, 137), but may as well be genuine. The Tung. parallel makes the theory of Turk. < Iran. (Sogd. ɣrtr'k, see TMN 3, 393 with literature) rather improbable.