For Christmas or birthday I gave Rhett a critter cage. I saw it at the toy store and it intrigued me. I regretted it because it was filled with caterpillars and I thought it was cruel. However, the life force will not be thwarted and the caterpillars began to hang from the top of the cage and then became butterflies. This one is reluctant to leave home and clung to Rhett all morning. Rhett is careful not to hurt their wings and little legs.