Golden orb-web spiders are sit and wait hunters that accumulate prey larders on their webs. If prey items are removed from their webs, golden orb-web spiders search for them. They search longer when they have lost more prey items as well as when they have lost larger prey items.A new experiment looked at whether these spiders have a sense of numerosity: the ability to track the number of prey items in their larders.Read my latest Zoologic post: Can Spiders Count?