Yes, that is close to what I was gesturing at with the walk in the woods and the berries. Before humans had a word for berries or hunger we had a latent relationship with nature, in the ability for nature to draw our attention to objects and effect our nervous system. And the first expression of that relationship may well have been externalized in the pictorial representation of animals, or maybe in gestures, or grunts - we can't know it was too long ago.

A larger point that could be drawn from the article is that we then gained a new kind of relationship, not just with nature but with the very expressions it elicited. Instead of our mouth watering at berries, suddenly our nervous system was reacting to the art we created. It is this indirect relationship, with the symbol itself, that the author is arguing created what we think of as the human mind. So nature creates the grounds for expression creates the grounds for minds. My original point was that "drawing animals" is only one kind of possible expression, and it is possible to broaden our idea of "expressions worth contemplating" well beyond paintings on cave walls, all the way down to how a flower attracts the attention of a bee.