Killorans were sentient, canine humanoids who resembled a six or seven-foot-tall cross between a wolf and an ape. They had fur covering their bodies, and extremely strong teeth. Due to their tremendous strength, Killorans were much in demand as construction workers. (PROSE: The Doomsday Manuscript, The Stone's Lament) Killoran blood could be used to cure heart conditions in humans, though it was dangerous in the long term and caused headaches and a short temper. (AUDIO: Thicker Than Water)