Ages 6 to 10 years. Children will be fascinated by the different ways in which animals grow and change from the time they are embryos to the time they are adults. This amazing book explains what a life cycle is in a clear, simple way. Detailed diagrams and colourful photographs help explain the life cycles of many different kinds of animals, including mammals, birds, snakes, lizards, fish, frogs, insects, spiders, and worms. Concepts introduced are: classification of the various animals (mammal, reptile, amphibian, etc.); the difference between hatching and being born; migration, nursing, moulting; two kinds of metamorphosis; life spans.