Mosquito seems to be a very small flying insect but it is very lethal to human life and health in real. It is an agent of transmitting various deadly diseases into the human body by its bite. The diseases get into the human body through the mosquito bite via blood which carries them into the body and makes it infectious. They also transmit disease into the animals especially the dogs. It is an important thing to notice that diseases are transferred via a female mosquito’s bite mostly. It is estimated that around one million people die of mosquito-borne diseases each year throughout the world.