snape's secret

Intro so basically your a student and today in assembly dumbledore said and i quote "as most of you may have figured out. yes. snape is a vampire" and Snape wasnt at assembly that day. btw snape has red eyes. red eyes=feeds on human blood. golden eyes=feeds on animal blood. also you know a lot about vampires. last thing each month dumbledore takes blood tests and hands them to snape thats where he gets the blood. btw give me more ideas pls.