The common emu (Dromaius novaehollandiae) is one of Australia's most iconic birds and the second tallest in the world after the ostrich. As a flightless bird, it is perfectly adapted to terrestrial life, with long, powerful legs capable of running at speeds of up to 50 km/h. Its shaggy plumage of brown and gray tones acts as thermal insulation, helping it survive in hot, arid climates. The neck displays a bare bluish coloration and the head has small dark feathers. Its digestive system is specialized for a varied omnivorous diet, complemented by small stones that help grind food in the gizzard. It ingests seeds, fruits, shoots, insects, and small vertebrates, demonstrating a great capacity for dietary adaptation. It is able to survive for days without drinking water, obtaining moisture from its food, but when it finds a water source, it drinks in large quantities. It has acute eyesight and hearing that allow it to detect predators from a distance. Throughout history, the emu has played an important role in Australian Aboriginal culture as a food source and as a spiritual symbol.

The emu is a diurnal, nomadic animal that travels great distances in search of food, especially during times of drought or scarcity. It is often found in small groups, although during certain seasons it can form large flocks. Its locomotion is based on long, fluid strides, and it is capable of making quick turns and running swiftly to escape threats. During the breeding season, social behavior changes: females compete with each other to attract males, and once the eggs are laid, the male assumes full responsibility for incubation and caring for the chicks. This paternal investment is rare among birds and can last for several months. Emus also exhibit exploratory behaviors marked by their natural curiosity. They are territorial animals if threatened, but generally peaceful. They use a variety of vocalizations, including deep grunts and guttural sounds that can travel long distances. These vocalizations serve social and warning functions within the group.

The common emu is listed as "Least Concern" by the IUCN due to its wide distribution, stable population size, and adaptability to modified habitats. Unlike other Australian endemic species, the emu has successfully exploited agricultural areas, where it finds abundant resources such as crops and artificial water sources. However, it faces localized threats. Among the main threats are habitat loss and fragmentation due to urban expansion and infrastructure, mortality from vehicle collisions, and egg and chick predation by introduced species such as the red fox and feral dogs. Although hunting is regulated, it is illegal in some areas. It has also been bred in semi-captivity for its meat, fur, and oil. There are nature reserves and protection policies in several Australian states that contribute to its conservation. In the long term, it is recommended to maintain connectivity between populations and monitor areas where human threats are most intense.