If any skeptic here likes nature documentaries, I'd recommend "Our Great National Parks" on Netflix. I found it unique in that it documented exceptionally intelligent and complex behavior by a number of animals we don't normally consider as being intelligent. For example, tool use by mongooses (cracking a snail shell with a rock) and a monkey riding a deer for fun, as well as frequent cooperation between species.
I don't find it so difficult to believe that a slightly larger encephalization quotient than our nearest competitors (chimps) could lead to an ability to control fire.
I don't find it so difficult to believe that a slightly larger encephalization quotient than our nearest competitors (chimps) could lead to an ability to control fire.