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Q&A How much blood does a vampire need?

Assuming that a vampire expends as much energy as a human of similar size how much blood would they need to consume a day? My naive estimate is 2500 calories a day, there are (apparently) about 9...

8 answers  ·  posted 9y ago by Maxim‭  ·  last activity 7y ago by Maxim‭

Question biology reality-check vampires blood