Information about the life cycles of various animals, plants, and insects is presented in a question and answer format.

Includes index.

What is a life cycle? -- What is the first step in a life cycle? -- Why do caterpillars eat so much? -- How does a butterfly get out? -- Do all living things reproduce? -- Why do animals have two parents? -- Which living thing divides into two? -- Why do turtles have lots of babies? -- Do any animals only have one baby? -- Do moms and dads get help? -- Do plants have babies? -- Why are seeds spread? -- Which plant "runs"? -- Do animals make seeds? -- Why do birds lay eggs? -- Do any mammals lay eggs? -- Which animal likes snorkeling? -- How long does a cicada live? -- Why does a glowworm glow? -- Why do insects hide their eggs? -- What do spiders keep in sacs? -- What do baby spiders look like? -- Why do spiders split open? -- Why do spiders go ballooning? -- Do fish lay eggs? -- Which fish swallows its babies? -- Why do fish dance? -- When do sea horses pop? -- What is a mermaid's purse? -- Do all sharks lay eggs? -- Where do baby sharks live? -- Which eggs wobble? -- How do tadpoles breathe? -- Why do tadpoles grow legs? -- Why are frogs so noisy? -- Why do pythons cuddle their eggs? -- Do crocodiles eat their babies? -- How do snakes get out of their eggs? -- When do eggs yelp? -- Why do cranes dance? -- Which bird is a great weaver? -- How do penguins' eggs stay warm? -- Who takes care of baby birds? -- Which newborn babies can run fast? -- Why do kangaroos have pouches? -- Are tigers good dads? -- Are any mammals born underwater? -- Why do elephant seals fight? -- What happens to old animals? -- Why do animals play? -- Which animals live the longest?