If you're afraid of spiders, here's one more reason to avoid Arizona. A never before seen species of tarantula has been discovered creeping around in the desert. Tarantulas can be big and scary looking but, honestly, don't get all freaked out. They're pretty docile and won't hurt you. They pose a very, very slight bite risk and they're venom isn't likely to kill you ... it may be a lil painful though.