He's still human shaped. Kabru's moves all work against him. It's easy to pull him down, easy to hold him locked in place, especially since he's not resisting at all. He yells when Kabru's teeth tear into him, though, struggling instinctively but ineffectually—though after a moment he masters himself and hangs there limply, panting raggedly for breath. His dick emerges from its sheathe, red and a bit shiny, and he barks out a shaky laugh. He can feel everywhere his body is touching Kabru's.