For years and years, vampire stories have entertained mankind. Bats are rumored to be bloodsucking Dracula who suck the bold of humans for their food. The vampires prey at night, well at least bats do. Scientists have revealed the mystery on how the bats are able to see at night and work their ways to their prey. This little blood sucking monsters actually smell the blood of their prey and then their smell leads them along.

These were the results revealed in the research done by Professor David Julius of the University of California, San Francisco and his colleagues. These sensory organs are known as infrared sensors and they tend to make these black beasts find out their way to their delicious prey.

This is only one particular type of bats that live on blood. These are known as Desmodus Rotundus. They survive by sucking the blood of big animals such as humans, sheep, cows, pigs and horses. Their infrared sensors help them target their prey from a long distance and this is how they find their way to attack them and suck their blood. They detect the heat that a living being emits.

"They have the genetic capacity at the level of the DNA but they don't exploit it - probably because they don't need to”, says Julius.