Anybody who’s ever seen Indiana Jones and the Temple of Doom should instantly recognize this monstrosity, commonly referred to as the Giant Prickly Stick Insect. As the largest known stick insect, the extatosoma tiaratum can reach lengths of 8 inches (20 cm) and is usually covered with large thorny spikes, which double as both camouflage and defensive armor.Most of the time this insect attempts to blend in with its surroundings, but if it feels threatened it will rear up on its hind legs and spread out its front legs, like a scorpion. Interestingly enough, it also releases a chemical that is meant to scare away predators. To humans, it smells like peanut butter.