The book does not lie, these guys are quickly become the big fat caterpillars at the end of the book. They are eating the leaves, the flowers and even the stems of the Butterfly Weed. We’ve discovered not that they are bigger and easier to see that there are actually 5 of them. We’ve been having a lot of fun trying to find all 5 every time we leave the house. I can’t wait until I come out and find them making there chrysalis, and a really really hope I can catch at least 1 of them emerging as butterflies.