Check out this time-lapse of a slime mold pulsating, captured by Fascinated By Fungi This is a. Slime molds are not actually a fungi, the common name slime mold is used for several kinds of eukaryotic organisms. The name refers to a particular stage in the life cycle of some of these organisms, where they resemble a gelatinous slime. Slime molds have neither a brain nor a central nervous system, nor any neurons. Nevertheless, some scientists argue they exhibit intelligence since they can "learn"