In the Aliens movie, what do the Xenomorphs eat?

In the movies Alien and Aliens, what do the aliens eat? You would think they first feed from the body host, but then when the human host awakens he doesn't have anything visibly wrong, so the human host was used only to incubate the young alien. When they get out of the body they keep growing but when they encounter humans, they don't eat them, they just kill them or use them as new hosts.

So, what do they eat? How can they grow that tall?

Answer

There is no canon info available (confirmed by searching most Wikis and many many forum discussion threads). The only 2 points of info are:

There is an possibility that the "inner mouth" is used to drink blood from victims

One forum post mentioned that "I believe in the RPG book published by Leading Edge Games, it was written that the aliens eat some pretty strange stuff, glass and dirt was on the list. I guess those two would make sense since the alien has a silicone cell structure?"

Mostly, it seems like the answer (discarding the games) is "it's not known what they eat, or whether they even need to eat at all".

Comments

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