"The Lakota, or western Sioux, call Bigfoot Chiye-tanka (Chiha-tanka in Dakota or eastern Sioux); "chiye" means "elder brother" and "tanka" means "great" or "big". In English, though, the Sioux usually call him "the big man". In his book "The spirit of Crazy Horse," (Viking, 1980), a non-fiction account of the events dramatized by the excellent recent movie "Thunderheart", author Peter Mathiessen recorded some comments about Bigfoot made by traditional Sioux people and some members of other Indian nations. Joe Flying By, a Hunkpapa Lakota, told Mathiessen, "I think the Big Man is a kind of husband of Unk-ksa, the earth, who is wise in the way of anything with its own natural wisdom. Sometimes we say that this One is a kind of reptile from the ancient times who can take a big hairy form; I also think he can change into a coyote. Some of the people who saw him did not respect what they were seeing, and they are already gone."
"There is your Big man standing there, ever waiting, ever present, like the coming of a new day," Oglala Lakota Medicine Man Pete Catches told Mathiessen. "He is both spirit and real being, but he can also glide through the forest, like a moose with big antlers, as though the trees weren't there... I know him as my brother... I want him to touch me, just a touch, a blessing, something I could bring home to my sons and grandchildren, that I was there, that I approached him, and he touched me."
Ray Owen, son of a Dakota spiritual leader from Prairie Island Reservation in Minnesota, told a reporter from (the) Red Wing (Minnesota) Republican Eagle, "They exist in another dimension from us, but can appear in this dimension whenever they have a reason to. See, it's like there are many levels, many dimensions. When our time in this one is finished, we move on to the next, but the Big Man can go between. The Big Man comes from God. He's our big brother, kind of looks out for us. Two years ago, we were going downhill, really self-destructive. We needed a sign to put us back on track, and that's why the Big Man appeared".