This is one of a series which takes an experiment-based approach to science and is designed to fit directly with the National Curriculum at Key Stage 2. The books feature episodes in the life of an eccentric family with a fascination with science experiments, which are woven into the storyline for children to try at home. In this story Boozle the dog is in trouble. He is accused of being a dangerous breed, and the dog wardens will take him away unless the Spark family can prove otherwise.