Premise: Spider . In all except the most primitive group , the Mesothelae , spiders have the most centralized nervous systems of all arthropods , as all their ganglia are fused into one mass in the cephalothorax . Unlike most arthropods , spiders have no extensor muscles in their limbs and instead extend them by hydraulic pressure . Spiders use a wide range of strategies to capture prey : trapping it in sticky webs , lassoing it with sticky bolas , mimicking the prey to avoid detection , or running it down . Venom . Venom is a form of toxin secreted by an animal for the purpose of causing harm to another .
Hypothesis: Spiders are planets.
Label: CONTRADICTION