Slime molds were once thought to be fungi, but are now classed as 'fungus-like organisms'. This largely useless definition is based on physical resemblance to some fungi. These organisms may have up to 12 possible forms during this cycle. Some slime molds feed on dead organic materials, others are active hunters of microbes or both. Slime molds are active, mobile states in which amoeba-like movement and behavior is observed. Slime molds are so called because of their slimy feel, caused by large numbers of individuals in their mobile state. The basic types of slime mold include plasmoid amoeba like organisms, cellular organisms. Reproduction may be in 'swarms' of slime molds which form fruiting bodies, which are biologically similar to mushrooms in terms of spore production.