MAZE SMART FUNGUS. “One species in particular, the SpongeBob SquarePants–yellow Physarum polycephalum, can solve mazes, mimic the layout of man-made transportation networks and choose the healthiest food from a diverse menu—and all this without a brain or nervous system. “Slime molds are redefining what you need to have to qualify as intelligent.”
http://www.scientificamerican.com/article/brainless-slime-molds/