Will vampire bats suck human blood?

Obviously they are vampires, and instead of food they need the blood of a human to survive. Careful who you befriend because they might actually be a vampire that wants your neck blood. In Twilight it happened to Bella who let the vampire have sexual relations with her. Creating another vampire spawn. Please don't make this mistake because it will just make more work for me...I am a vampire exterminator for a living. Just google vampire killer extraordinaire if you need wooden stakes, garlic, or silver bullets because I sell them all.