The great Swiss myrmecologist Auguste Forel (1848 – 1931) once observed that “the greatest enemies of ants are other ants, just as the greatest enemies of men are other men.” In general, this maxim appears true – with exceptions. Once such exception was reported in 1977 in the journal Nature, by myrmecologists James H. Brown and Diane W. Davidson. These two researchers found that seed-harvesting ants compete with seed-eating rodents (!) in the Silverbell Bajada near Tucson, Arizona.