Creative activities is a distinctive feature that only the human beings practice. None of the species in the animal kingdom have been able to produce tools and instruments, houses, machines and vehicles, or, even if this may seem as one of the more superfluous products of our society, to make art. There has not even been found indications of the higher apes finding these practices naturally.
This difference is not purely created by the fact that our culture is more or less dominating the entire planet, and does not leave much space for other species to bring out whatever cultural product, they could have had. And the difference is rather caused by the cerebral hemisphere specialization than it is conditioned by the difference of to what extend the cortex is folded. The hemisphere specialization is what has brought mankind just that small step further than the rest of the species: the ability to combine the left and right hemispheres. These two parts of the brain are, as a specific characteristic of Homo sapiens, split in two modes of functioning, which gives two ways of perception and expression, an analogic and a digital. The different hemispheres helps us to both sense the surroundings, percieve and understand things in larger perspectives (the analogic), and have an analytic approach, a linguistic based understanding (the digital). Animals only possess the analogic modes of perception and expression. What this only one million year old development of the brain actually means, is that the human being rose above the ordinary cognition of higher species (the knowledge of the self and one´s own actions) to the state of creative cognition.
This level of cognition, caused by the hemisphere specialization, implies that the human being is capable of changing the surroundings, create the earlier mentioned tools and instruments, and that we start to think in what we call art: the beautiful, the aestethic, the unpredictable and non-existing. As artists human beings are able to switch between the two modes of thinking, more or less consciously, of course, while the chimpanzee is bound to its analogic way of expressing feelings and emotions. The chimpanzee will also lack the chances of being able to draw, in any style just close to naturalistic, as drawing, like reading, writing and speaking, demand the linguistic digital hemisphere to analyse visual perception and understand the rules of expressing them in a visually communicative way. Many artists draw upon this side of the human brain to bring back an original language based on the primitive sides of man, hidden behind the layers of creative consciousness. Also see: How to become a creative genius.