Emus (Dromaius novaehollandiae) are the world's second-largest living bird by weight and are found in most Australian habitats except for heavily wooded areas and deserts. Emus are most common in savanna areas where there is sufficient water. Emus are powerful runners and can sprint at 50 km/hour (31 mph). They feed on a wide variety of plants, fruits, and invertebrates and also take small mammals and reptiles if the opportunity arises. Emus are protected in the natural areas close to Exmouth in Western Australia and become confiding around people. Their main predators are speeding motor vehicles and Dingoes, Australia’s wild dog. Emus are polyandrous, with females often mating with several males. Male Emus incubate the eggs, usually about 10 per clutch for around 50 days, during which time they do not eat or drink, living on their body fat alone. After hatching, the male cares for the chicks and will defend them against other Emus or predators. Chicks are dependent on the male for about 15-18 months.