Yes, exactly, and that's where culture shifts have to take place in order to be meaningful, in part because we are such highly social animals. When did human culture first being is a question that I do not have enough expertise to answer, although I'll venture a guess. I am reading a book right now called Becoming Wild that talks in large part about culture within different animal species. The segment I'm on is about sperm whales and how what is essentially the institutional knowledge gets lost if too many of the older whales are killed. Of course, some of it is instinct, but different clans also have customs and behaviors that are specific to them - they have their own whale subcultures. So, if animals have culture, then I'd venture that humans did to, even before they were far enough along to be classified as Homo. Naturally, that culture will shift by clan and by geographic location due to a variety of factors.