Eighteen deftly fashioned verses in the trademark Prelutsky style, with catchy rhythms, clever rhymes, and witty wordplay and conceits (``If you don't believe in dragons,/It is curiously true/That the dragons you disparage/Choose to not believe in you''). For each, Sis provides a large, gloriously imaginative spread featuring innovative variations on traditional dragons, in wonderfully fantastical or entertainingly ordinary settings (``I have a secret dragon/Who is living in the tub...''). A must for dragon fanciers and for all those who enjoy light verse. (Poetry/Picture book. 4-10)