What is the life cycle of butterflies and moths? View the Butterfly and Moth Life Cycle page. Outline Frequently Asked QuestionsGeneral QuestionsWhat are butterflies and moths? How many kinds of butterflies and moths exist? What is the difference between butterflies and moths? Are there endangered butterflies and moths? Are butterflies poisonous? Life Cycle QuestionsWhat is the life cycle of butterflies and moths? How does a caterpillar turn into a butterfly? Why do caterpillars turn into butterflies? How do caterpillars "know" when it is time to turn into a chrysalis? What is the red liquid that comes out of a butterfly's abdomen after its emergence? ‹ Life Cycle Questions up How does a caterpillar turn into a butterfly? ›