P.S. You don't think it is worth mentioning that there is a suggestion (probably not more than that) that Homo erectus (Peking Man) might already have been befriending a canid/wolf species before Modern Humans began their co-evolution with the dog? The evidence for a proper Hominin-dog relationship at that early stage is probably very thin, but it is intriguing nevertheless, and it is something that I would certainly mention if I were revising the article. Just a thought.