Well, I wouldn’t exactly agree with your initial statement there. There are some alien species that could definitely be considered Furry. Furry is, after all, just a stand-in word for the more technical ‘Anthropomorphic’ which, by definition, is any non-human thing to which we apply human traits. I realize that furries tend to reserve that word for living creatures that have human traits but if a fictional alien has humanoid traits, would that not still be some kind of humanization? M’ress would be an easy example of an alien that shares both human and animal traits.

As for xenomorphs, that actually does get a little tricky. Facehuggers are outright not furries at all. They’re completely alien. However, when a facehugger mates with a species, the resulting spawn shares traits of both the xenomorph and the host species. If that initial host were human (which is what we predominantly see in the films) what we see could actually be considered furry as it is the application of human traits to another non-human creature. Thus why they start out spidery egg sacks but then develop into bipedal, two-armed creatures with limbs, head and tail all in the same configuration as humans.

And yes, I can already hear some of you people whining about how it can’t be furry because it’s not a real animal from earth; to which I would simply counter that dragons, griffons and sergals aren’t real either but they can fall into the furry category just fine when they have humaniod traits. Boom.