"Xenogender is an umbrella term for non-binary gender identities that cannot be fully described through their relation to concepts typically used to describe gender such as masculinity, femininity, androgyny, neutrality, agenrity, or outherinity. Instead, xenogenders can best be described through how they relate to things, beings, or concepts that most people don't think of as having to do with gender[...]. It is sometimes described as any gender that "cannot be contained by human understandings of gender". People who identify as a xenogender may call themselves xenic. The gender quality associated with xenogenders is xeninity. The opposite of xenogender is anthrogender.
Xenic people often have a strong understanding of how their gender feels to them, however they often find that there aren't any words for their experiences, this is called a lexical gap. In order to fill that gap xenogender people often describe their gender through metaphors, by saying their gender is like, is influenced by, or shares qualities with something else."
While xenogender is a very broad umbrella, it does describe me quite well. My gender cannot be described in relation to human concepts of gender; it relies on understanding that I see myself as nonhuman, and desire to have a nonhuman appearance (which includes gender characteristics of my species that don't apply to humans, like a dewlap).
I have a strong sense of my gender as draconic masculinity. By this I don't mean human masculinity mixed with the concept of dragon; my masculinity isn't related to human "manliness" at all, nor does it desire to have human-male traits like a beard or external genitals. Rather, it's the feeling of being a dragon, which happens to be a male of its species, and would be seen as male by other dragons of its species (though not necessarily by other species).