All butterflies have "complete metamorphosis." To grow into an adult they go through 4 stages: egg, larva, pupa and adult. Each stage has a different goal - for instance, caterpillars need to eat a lot, and adults need to reproduce.
How long is the cocoon stage?
Butterflies make a chrysalis, while other insects—like the tobacco hornworm caterpillar—makes a cocoon and becomes a moth. They will stay and transform over time into a butterfly or a moth. Most butterflies and moths stay inside of their chrysalis or cocoon for between five to 21 days.
How many days is the life cycle of a butterfly?
Butterflies and moths have four stages of life: egg, larva (the caterpillar stage), pupa (the chrysalis phase in a butterfly's development), and adult. It takes a monarch butterfly just 28 to 38 days to complete its life cycle, with warmer temperatures generally being responsible for faster development.