What about a human with altered biochemistry, such that they could synthesize all needed biological materials from compounds found in blood? Is that a vampire?
I’d call them a vampire, but it’d be partly in jest. DSimon’s below would give me even less pause, and with a fuller list it seems to become entirely uncontroversial.
What about a human with altered biochemistry, such that they could synthesize all needed biological materials from compounds found in blood? Is that a vampire?
“Only by”, not “by only”.
Fine. Humans that are incapable of metabolizing anything other than hemoglobin. Does that count?
I’d call them a vampire, but it’d be partly in jest. DSimon’s below would give me even less pause, and with a fuller list it seems to become entirely uncontroversial.