Can pigs make subconscious art when I can't?

"Trotters Independent Painters began their career by accident when the piglets broke loose at a craft fair at their home, and began investigating tins of non-toxic paint with their snouts and trotters." Daily Mail

Is it only possible for an animal to make subconscious art because
they don't have a preconcieved concept of what art is?

^^^Their first 'official' piece of art ^^^