Spike isn't entirely convinced. His own more menacing side is well hidden. If he would bear his own teeth right now, he'd be as convincing as this guy is. Still, the whole 'giant snake tail' thing really isn't all that undercover. It makes Spike lean believing him. If he could transform his teeth, surely that tail would transform too.

He moves closer, but doesn't sidle up just yet. "Some people are more dangerous than they look."