These guys look dangerous for a reason — they are! All scorpions possess venom to paralyze or kill their prey. When inflicted on humans, some of the toxin's effects include anaphylactic shock, vomiting, compromised vision, cramps and even death. The encouraging news is that scorpions usually only sting humans in defensive situations like being stepped on, mishandled or entangled in clothes. So, check your coat pocket before you put it on!