Fear of spiders is called arachnophobia and is one of the most common phobias among humans. The fact that they are incredible creatures escapes most people and they are terrified by the sight of spiders. Most spiders are carnivores and they posses venom that can kill even humans if not treated quickly and properly. While a large number of spiders are not venomous or have very little venom to affect people in a major way, there are some spiders that are extremely poisonous and can even cause death. Here is a list of the top ten poisonous spiders.