SCORPION: Scorpions have been wielding toxic weapons for nearly 400 million years. Its segmented tail is the scorpion's ultimate weapon. A pair of glands inside the tail pumps venom through the telson, or stinger, when the scorpion strikes. Scorpion venom can include several different types of neurotoxins, which shut down the victim's nervous system. Some scorpions are designed to cripple a single type of prey. Scorpions actually rely on their claws to capture most prey, resorting to their stinger only if the animal is too strong to overpower. They have unique, feathery organs on their sternum called pectines, which are covered in chemosensors. These are in constant contact with the ground, helping the insect locate prey by sensing chemical trails.