On a very sunny day the caterpillar's egg hatch. The caterpillar goes to look for food. When he saw a leaf he started to eat . He got fatter and fatter before he goes to find a stick to hang from to turn into a chrysalis.
Two weeks later the caterpillar has turned into a butterfly. The butterfly still has milk weed poison in its abdomen from when it was a caterpillar that helps protect it from birds.
