Комментарии:KW 233, VEWT 269, АПиПЯЯ 284. A Turkic-Mongolian isogloss; loan is not excluded (see Clark 1980, 43, Щербак 1997, 164), thus the PA antiquity is dubious (cf. also TMN 3, 628-631). The Turkic form may actually be the same root as the somewhat later attested *güčük 'puppy' (see ЭСТЯ 3, 92-93) - which may also be the source of MMong. güčüg; in this case one should rather consider a possibility of comparing Mong. gičige, Khalkha gičij 'bitch' and Evk. guske 'wolf', gusketkēn 'wolf's cub' (ТМС 1, 175).