“?”
Jack’s voice drew Flat’s eyes to the street in front of the hospital. He could see police officers in the street pointing at something and panicking. Flat turned his gaze in the direction they were pointing while using magecraft to enhance his sight... and saw “it.”
A three-headed dog the size of a full-grown elephant, pale breath roiling in its mouths, and, standing calmly on its back, a man wearing a strange cloth and readying a bow.

Fate/Strange Fake: Volume 4, Chapter 13 ("Day 2, Night")