"You won't believe it, but how mosquitoes suck blood is actually super high-tech. First off, only the female mosquitoes bite because they need extra energy for egg laying. On the other hand, the males only suck sap. So let's go back to the females. They need to find their target and they've got a sophisticated radar system that can sniff out your carbon dioxide and sweat like a blood-sucking GPS. So the more of those you produce, the better target you are. When it lands, it spits a numbing agent on your skin, and then it's showtime. Six needles are about to pop out like a mosquito Swiss army knife. Two needles are like let's slice and dice and then the next two open sesame and finally the last needles start the blood party and pick up the blood. And then voila, you're left blissfully unaware of the operation until the mosquito has vanished into the night. Or it might get slapped."