Jumpy Jack and Googily by Meg Rosoff
Meet Jumpy Jack, a very nervous snail who is afraid of monsters, and Googily who is a very good friend indeed. Wherever they go, Googily kindly checks high and low just to make sure there are no scary monsters about. But, as every child knows, monsters come in many shapes and sizes. Some are even blue with hairy eyebrows and pointy teeth.