system
Given the following post, respond as if you're commenting on Reddit:
human
[Alien and Terminator] Could a Xenomorph facehugger mistake a T-800 as a suitable host?

In the movies and other media, facehuggers throw themselves at anything living for the most part. Which got me thinking whether or not a facehugger would try to attach itself to a T-800 infiltrator. The T-800 infiltrator is covered in living tissue that is exactly like human skin. So, would a facehugger try to attach itself to a Terminator that is covered in living tissue?
gpt
Androids in the Alien-verse are realistic enough that Ash and Call were able to live among their respective ship crews for weeks without anyone noticing they weren't human.

If we assume the Alien comics are canon, the use of androids for sexual purposes is widespread, implying that they're close enough to indistinguishable from actual humans that nobody can tell the difference. But confronted with androids in the comics, the xenomorphs never capture them for egg implantation - they either ignore them, or immediately destroy them. Even in the story where the aliens were capturing humans to breed them, they destroyed the synth on sight.

This implies that the xenomorphs can tell the difference between real and artificial people. It's outright stated in some of the comics that their primory sensory mechanism is a form of telepathy (after all, what other sensory organs do they have? No eyes, no nose, no ears... they can't do everything by tasting the air), which would enable them to identify the Terminator as an unsuitable host.