As I've long said, the Sasquatch is of Human origin. They are descendants of an interbreeding between Early Homo Sapiens and Neanderthals in Asia and migrated into North & South America and Europe along with the Homo Sapiens migration. They are an intelligent species and have the same language of what ever region they live in. Their language though is in a dialect of the group or tribe in their region. They have some technology..at least on a limited basis due to living in the wild as they do. As far as their appearance, they are not the giant hair covered ape beasts that legends have told of...although having heavier than normal body hair due to living outdoors. They live in shelters,constructed of whatever discarded material they can gather from the nearest "normal human" inhabitants. They live a mostly nomadic life...coming into a new location,staying a while then moving on when the "outside" world gets too close or supplies dwindle.