Justin got a butterfly habitat for his birthday. We ordered the caterpillars through the mail. When they came there were tiny, it didn't take them long to grow and make cocoons. We transferred them to the cage and within a week they were starting to come out of their cocoons. Both boys loved watching them. When they were caterpillars Garrett would run to look at them and them come back and say Mom you have got to come see the Caterpillar they are getting huge! When they turned into butterflies we kept them for about a week because of the Weather and let them go the morning of Mothers Day!