It makes sense... cave man comes back near dark, soaking wet, carrying a bunch of ducks... and had your idea only because his cousin Og pushed him into the pond as a joke.
You’ll notice that cousin Og did not come back. Thankfully cousin Og’s wife, Ogetta, was a master at creating and controlling fire. Fossil evidence also indicates Ogetta could suck the marrow out of a mastodon thigh bone. Which of course has nothing at all to do with a duck dinner, a warm fire and wet furs drying on hot rocks. But science goes where the clues lead it. ;^)