Mammals - What's the Difference? Author:Stephen Savage Introducing the topic of animal classification to young readers, this book explains which mammals can fly, which mammal uses twigs to dig termites out of their nests, and which mammals lay eggs. It is one of a series of books which gives a taste of the great variety of creatures found in each animal group and covers the key life processes set ou... more »t in the science National Curriculum Key Stage 2 guidelines.« less