Pseudoceros dimidiatus
P. dimidiatus is part of the turbellaria class of flatworms. Turbellaria live mostly in water or moist terrain. Unlike their stupider, flatter cousins, these flatworms actually have a brain, however it is a simple one. Emanating from the brain are four nerve cords that connect the brain to the rest of the body. P. dimidiatus, however, does not have a ganglia outside of the brain.