A butterfly starts it’s life as a little egg. If you look close enough you will see inside the egg there is a caterpillar growing. The mother often attaches the egg to a leaf so it will be able to eat.
When the egg hatches the caterpillar eats the leaf that it was born on. The caterpillar has to eat a lot of leaves so it can grow quickly. When the caterpillar is born it is extremely small. The caterpillar instantly starts to grow when they start eating.
As soon as the caterpillar is done growing it turns itself into a chrysalis or a pupa. In the chrysalis the old body parts of the caterpillar turns into a beautiful monarch butterfly. This is called metamorphosis.
When the butterfly first emerges from the chrysalis both of the butterflies wings are soft and small. When the butterfly has rested it will pump blood into its wings. Later it will find a partner and lay new eggs. This is when the butterfly life cycle will start all over again.