ὑλακτ-έω · hylakt-eō — LSJ
bark, bay, howl, give tongue
bark, bay, howl, of dogs, ἱστάμενοι δὲ μάλʼ ἐγγὺς ὑλάκτεον Il. 18.586; ἀγαθός γʼ ὑλακτεῖν Ar. V. 904; ὑ. περιτρέχων Eup. 207 (of a man compared to a dog); of hounds, give tongue, ὑ. περὶ τὰ ἴχνη X. Cyn. 3.5, cf. 9.2.
2 howled for rage, yelp for food
metaph., κραδίη δέ οἱ ἔνδον ὑλάκτει howled for rage, Od. 20.13; of a hungry stomach, yelp for food, νηδὺς ὑλακτοῦσα AP 6.89 (Maec.).
b howling
c. acc. cogn., τοιαῦθʼ ὑλακτεῖ S. El. 299; ἄμουσʼ ὑλακτῶν howling his uncouth songs, E. Alc. 760.
II bark at, bark, snarl at
trans., bark at, τινα Ar. V. 1402, Isoc. 1.29, Theoc. 6.29: metaph., bark or snarl at, Plb. 16.24.6; hence Vespasian called the Cynic Demetrius κύνα ὑλακτοῦντα, D.C. 66.13.