Jacques de Vitry [ca. 1220 CE] (Historia Hierosolymitana, Chapter 88): There are also wild dogs, called papiones, more ferocious than wolves, which fill the night with their endless howls. - [Machine-assisted translation based on Donnadieu.]

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Quadrupeds 4.91): The papiones is an animal living near Caesarea in Cappadocia. They are a little larger than foxes, and howl together like wolves, with one beginning and the others shouting after. They have hairy skin. When an animal is killed, they immediately join together at the corpse with cries. They also enter graves and feed on the corpses of men in their hunger. Their voice is heard at a distance, and when it is thought that they are near, their howling is actually distant. - [Badke translation/paraphrase]