Do you know what the worlds deadliest animal is ? Take a guess and then scroll down to see if you are right. The answer may surprise you.It's interesting to note that the animals we often hear horror stories about in the media are not the biggest killers. Mosquitos carry deadly diseases such as Malaria that kill hundreds of thousands of people every year. The only times when they have not been the biggest threat has been during wars. Looking at the map below makes these figures seem even more surprising. Malaria is only present in certain parts of the world. Yet is still kills in such great numbers.Malaria is not the only disease that mosquitoes carry. It is however the deadliest. Killing more than six hundred thousand people every year. These annoying little insects are persistant and deadly.