Do any mammals lay eggs? Why are baby mammals born with soft skulls? What is suckling? Every mammal grows inside its mother's body before it is born. That is just one of the things that makes it a mammal. Read 'The Life Cycle of Mammals' to explore how mammals are born, grow, and reproduce. Look, too, at how their lives are linked to the habitats in which they live. Heinemann InfoSearch books ask the questions you want answered. Each chapter starts with a different question and gives detailed answers.