Some recent writers are inclined to separate the Bacteria and slime-molds from the fungus group, and call them fungus animals.
"The Mushroom, Edible and Otherwise" by M. E. Hard
Introduction to the Study of Pathogenic Fungi, Slime Fungi, Bacteria and Algae.
"Twentieth Century Inventions" by George Sutherland
(CBS News) McDonald's and other fast food chains may have gotten rid of "pink slime" from its burgers, but the gooey sounding chemical treatment that removes bacteria from meat is popping up elsewhere: Kids' school lunches.
Once the amoebae reach their destination, slime molds seed the area with the bacteria, ensuring any amoeba offspring will have plenty to eat.
These bacteria produce a slime and prefer to move on the slime trail produced earlier.
Linearly edge-reinforced random walks
This is the case for the slime mold Dictyostelium discoideum and for the bacteria Escherichia coli.
Nonlinear mean field Fokker-Planck equations. Application to the chemotaxis of biological populations