>>533689663
>Chasca and Iansan are elves
>Kachina, Xilonen, Ororon and Ororon are part animal
>there are actual living giants in Natlan(I actually think they mention that they also live longer)
>all count as humans
One of the different races probably lives longer, it's not a big deal.

A human like Citlali being unaging needs an explanation though.