Caterpillers

How many of you or your children catch caterpillars and put them in jars in hopes of watching them do whatever it is they do? How many of them live? Sierra is working Caterpillar #2 as of a few minutes ago. #1, April, died or something so she found another one. I remember running around catching fireflies and putting them in a quart jar. Ah, to be a child again.... Life was much simpler as a child....