I met a guy (non-Navajo) once that had spent many years on one of the reservations, think he was a teacher. He had learned the Navajo language, even though it was not required of him, and he spoke it fluently. I just remember thinking that it was a such a powerful, yet beautiful sounding language.
See post #9.
With 12-16 tones . . . it’s a VERY difficult one to learn.
And then there’s male/female stuff.
Hazards aplenty.