Measle and the Dragodon by Ian Ogilvy
Measle is up against not one Wrathmonk, but a whole gang of them. Measle and his dog, Tinker, also have to outwit numerous fairground creatures which come alive in a most alarming way, plus the evil Dragodon and his dragon, Arcturion. Will Measle be in time to save his mum from the Dragodon's evil clutches? Can he triumph once again?