First: let me announce the names of the monarch caterpillars. After much consideration, and taking into account your comments, I have decided to name the caterpillars: Maddowpillar (the bigger one) and Lambchop (the smaller one). I hope Rachel doesn't mind.
But there's an even bigger development here in caterpillar land: Maddowpillar is getting ready to make a chrysalis! It is hanging from the netting on the shoebox in a J-shape, which is the first step. Next, Maddowpillar will start to shake, its skin will split open and underneath will be a wiggly blob that after a couple of hours will harden into a gorgeous, jade green chrysalis with a tasteful row of gold dots.
Lambchop is up on the netting, too, and it looks like it's only a matter of time before it starts to hang as well.