Ravening

Then fury spurred their courage, and behold, / As ravening wolves, when darkness hides the day, / Stung with mad fire of famine uncontrolled, / Prowl from their dens, and leave the whelps to stay, / With jaws athirst and gaping for the prey. / So to sure death, amid the darkness there, / Where swords, and spears, and foemen bar the way, / Into the centre of the town we fare. / Night with her shadowy cone broods o'er the vaulted air.

Source: tatoeba (6777949)

Then, like wolves ravening in a black fog, whom mad malice of hunger hath driven blindly forth, and their cubs left behind await with throats unslaked; through the weapons of the enemy we march to certain death, and hold our way straight into the town. Night's sheltering shadow flutters dark around us.

Source: tatoeba (6777966)

There is no shortage of ravening friends and relatives on the day one hits the lottery.

Source: wiktionary

1555, Richard Eden (translator), The Decades of the Newe Worlde or West India by Pietro Martire d’Anghiera, London: Edward Sutton, Decade 3, Book 5, p. 116, They eate mans fleshe but seldome, bycause they meete not oftentymes with strangiers, except they goo foorth of theyr owne dominions with a mayne army of purpose to hunt for men, when theyr rauenynge appetite pricketh them forwarde.

Source: wiktionary