A butterfly starts life as a very small egg.If you look close you can see the little caterpillar glowing in side of it.The mother usually attaches the egg to the leaf that will be food for it.
When the egg hatches the caterpillar eats the leaf they were born on.Caterpillars need to eat and eat so they can grow fast.When the caterpillar is born they are so small. When they start eating they instantly grow.
As soon as the caterpillar has done growing it turns in a chrysalis or a pupa.In the chrysails the old body is transforming into a beautiful butterfly.This is called metamorphosis.
When the butterfly fist emerges from the chrysail both of the wing a going to be soft. As soon as the butterfly rested it will pump blood to its wings. Later it will find a partner to mate with and lay new eggs. This is when the butterfly life cycle starts all over again.