A.bark, bay, howl, of dogs, “ἱστάμενοι δὲ μάλ᾽ ἐγγὺς ὑλάκτεον” Il.18.586; “ἀγαθός γ᾽ 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. metaph., “κραδίη δέ οἱ ἔνδον ὑλάκτει” howled for rage, Od.20.13; of a hungry stomach, yelp for food, “νηδὺς ὑλακτοῦσα” AP6.89 (Maec.).
II. 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.