Every animal has a unique part to play in maintaining nature's balance. This book, which is one of a series looks at the role of various animals in the natural world. Each book combines scientific information with a story. The stories reveal the author's respect for animals and the information includes guidelines on how people can also play a part in safeguarding their future. This book illustrates animals which humans regard as pests, such as foxes and rats and makes a plea that they should not be persecuted.