I'm just curious haha
Nope. sorry there aren't any vegetarian vampires. although wasn't there a movie where the vampires drank synthetic blood. So maybe they could be vegetarian. On the TV show Grimm there is a vegan werewolf.
Human blood from a vegetarian is
blood isn't, at least in some types of vegetarian
If a person consents and allows you to drink their blood then yeah.
technically its not meat, but why would you want to eat it anyway..