Canines are summoned minions of Lycaons. They are children of Typhon personifying his malice in lupine head form.
Appearing in small groups, these skeletal wolves' heads attack with short-range, lunging bites.
Codex entry
'The father of all monsters gave rise to a multitude of things that mortals and perhaps gods fear, rivaling in number even all the sons and daughters of Night. Some of these can hardly be described as living things; they are more like flashes of malice given form... sometimes even a decorative form, oddly enough.'