In northern Sinaloa and southern Sonora, where I live, exists a language called "yoreme", one of the 68 native languages that coexist with spanish in México. Some people are worried about that language might never be spoken again someday because while the time is passing, less people speak it. I don't think that one day it will become extinct, by now it is preservated in books with other cultural things of those people, and most interesting and curious to me, many non speakers use it already and we don't realize it. For example, I know the words like "cahui", that means mount and "bampo" that is a place with water, a lake for example, and it's because many towns and cities have names with these words. Also some people often use an expression to say we confirm something: "jeewee", like: Are you going to be there this afternoon? And I say "jeewee", it's like "of course" but it literally means "yes"