The Proto-Anatolian word *gwóʔu-
Word *gwóʔu-
Meaning cow
See also Proto-Indo-European: *gʷōus ‘cow, bull’
Hittite: kuu̯āu- ‘cow’
C. Luwian: *wa-a-u-i ‘cow’
Lycian: wawa ‘cow, bovine’

Other words that might be of interest
*ʔeku- ‘horse’, *k̂won ‘dog’, *HowV- ‘sheep’