Not all animals share the same type of behavior. Not all animals are considerably good pets especially the wild ones. These unwanted behaviors are probably a part of their defense mechanisms to protect themselves against their predators while others are truly dangerous in nature. In this world, we have the so called "survival of the fittest" and we, humans, are intelligent enough to top the food chain or at least that's what we think we are, however, that is not always the case. We might have big brains to invent things like guns and other weapons but we are not physically fit to survive against animals with giant claws and fangs or those that carry deadly poisons which can kill us instantly. Listed below are five of the most harmful animals in the world.