Creationist bullshit PRATT, except the AI is a new thing.
However, regarding animals: True, dogs do not respond to visual stimuli in the same way people do. So while human-style porn is out, there are still pheromone sprays available that can make a male dog react to a chair in the same way that he would to a bitch on heat, if you’re sick enough to want to degrade a poor animal in that way.
Also, if two monkeys are shagging it’s not uncommon for the other monkeys to watch and wank, especially in captivity (which is not good for them, obviously). So while monkeys do not create artefacts, the genesis of the tendency towards porn is there none the less.