Did you miss my post? Sorting out the zoo really had nothing to do with it... except... the animal that is most likely to show up in the sand box, and do due diligence.... in my mind... is the considered bunny.
Monkey can come out later.
But it all starts with bunny... and is your bunny willing to step into the sand box with your friend... and maybe... get a little... soiled.
ETA: Your bunny is going to test things. If your bunny wants to endlessly test the soil... your monkey will never have a chance. And your monkey has been stored up so long... the light hurtzes its eyes... so it is not going to come roaring out of its cage... your bunny will have to hold its hand and lead it...
