He looked like this, but his head and mouth looked more like a dragon, like this:
Actually, now I realize it was a many-legged dragon. Instead of running away in terror, which was my first impulse, I picked up a golf club and whacked the centipede/dragon and broke its jaw, killing it dead, much to my relief. After it was killed, it turned to dust and disappeared.
But then I was immediately accosted by assailants who were roaming around in great numbers throughout the region, and throughout my dream, trying to zap me with a small round weapon that looked very much like a hockey puck.