New Vampire Breeds?

Since the day I learned that my real family put me up for adoption because they where in with a cult "no info on what cult it was" I have been interested in the world of the un-explained. So I decided to dig more and more in every informational source I could get my hands onto and look at the information that was given to try and comprehend how it got to be or how it originated. But through my studies I became focused on vampire cults and tried to dig up info on them. Turns out it isn't as easy as walking to your local library, and some cultist even gave me some "friendly advice" to stay away. I won't be giving out any of their locations for my informant’s sake. I probably got my friends into enough trouble as it is. What I was told is that there are real vampires among us which made me very skeptical because it wasn't much to fall back on information wise. But then I was getting information that they would use special methods to hide themselves. If the vampire teeth would grow too large, a special dentist in the vampire chain would simply dull them down to hide mask that vampire. Some cults even told me that over the years vampires evolved to a new stage of hunting, where they no longer need blood but feed off electrical and aural sources. It was really odd at this point till I asked more about it. Sadly they wouldn't tell me anymore and I had nothing to try to convince them to tell me. If anyone has more information on this New Breed please tell me. I'd love to learn more.