Nest nests to farm fungi. Ant nests feature an elaborate colony structure that may extend or more underground. As the structure gets further underground, individual chambers become farther and farther apart indicating that the ant is aware of its depth. It is hypothesized that they accomplish this by sensing the level of carbon dioxide in the soil. The leaf cutter ant builds a complex nest which can house 8 million individuals. Its nests feature numerous chambers, most notably garden chambers where they farm fungus on leaves they harvest from the forest. Species such as the carpenter ant and the wasp "Polistes
Meat ant to gain access to water or where water has been spilt, either if the site is nearby their nest or far away. Despite their dominance among ants, a number of animals are known to prey on meat ants. The short-beaked echidna ("Tachyglossus aculeatus") is a prominent predator of the meat ant, mostly due to the high fat levels (up to 47%) in virgin queens. These queens can almost contain 47% fat, and when no queens are available after an attack, an echidna may stop attacking the nest. However, these ants are normally consumed either in low numbers or avoided entirely.