Meat ant a number of dead or alive animals, including metamorphic crucifix toads, snakes, lizards, and birds. On some occasions, swarms of workers have been found on dead foxes. The meat ant is the only known ant in Australia that feeds on fresh guano. The collection of guano by a nearby meat ant colony shows the opportunistic nature of the species. Observations show that trails of workers in groups of two to four were found collecting the guano under an active bat roost within an abandoned mine and proceeded to return it to the nest. The collection of guano by any Australian
Leafcutter ant virulent fungus, has the potential to devastate an ant garden, as it is horizontally transmitted. "Escovopsis" was cultured, during colony foundation, in 6.6% of colonies. However, in one- to two-year-old colonies, almost 60% had "Escovopsis" growing in the fungal garden. In some parts of their range, leafcutter ants can be a serious agricultural pest, defoliating crops and damaging roads and farmland with their nest-making activities. For example, some "Atta" species are capable of defoliating an entire citrus tree in less than 24 hours. A promising approach to deterring attacks of the leafcutter ant "Acromyrmex lobicornis" on crops has been demonstrated.