Spiders can be interesting as well as a scary creatures. There are several types of them and they range in size and coloring. What may surprise you though is that generally the larger ones aren’t nearly as dangerous as some of the smaller ones. You can judge what a spider will do based on size and looks alone. Spiders generally move very slowly but they don’t have to worry too much about various predators. Most of them have a very powerful venom that they deliver and will paralyze predators. There are types of spiders with venom strong enough to make humans very ill or even cause death.