Grammy gave Benny a butterfly house for Christmas, and we sent away for the caterpillars to inhabit it. They arrived very tiny, and then grew very large, all without leaving their little food-filled jar. I'm not going to say it wasn't kind of gross to see them eating, pooping, and growing, all in a very small space. But it was also kind of amazing because at times we felt like we could almost see them getting bigger if we watched for 5 minutes straight. Now they are all chrysalides, and we will move them into their new mesh house, and wait for them to turn into monkeys.