Do spiders defecate or urinate? If so, how? Does this interfere with the spinnerets at all?
(Where’s that guy who had the pet spider?)
I’m looking at an anatomical chart of a spider. The anus is just above the spinnerets at the spider’s posterior. I don’t see one, so I’m guessing there isn’t a separate external urinary opening. The genital opening, by the way, is separate, and is on the ventral side.