These flightless birds inhabit plains, scrublands and open woodlands. The male builds the nest and incubates the eggs after the female lays them. Emus are omnivores. Their diet includes grasses, seeds, leaves and fruits, as well as caterpillars, beetles, crickets and even lizards. Lizards, in turn, are major predators on emu eggs. Other main predators are dingoes, eagles and cats. Emus live up to 15 years in the wild and 25 years in captivity.