Rameses finally goes feral after his long transformation. The reason it happens to him at this particular point is never brought up in the comic itself. By focusing completely on running, he tapped into his growing cheetah instincts, making it all too easy for what was left of his human mind to slip and allowing the wild cheetah to take over
Side note: It was during production of these pages that I was building the basics of this very website! Talk about laying a railroad while the train’s already moving.