It also exports iron ore, uranium, aluminum, gold, copper, tin and silver. Australia produces most of the world's finest opals. Australia is a leader in the research and production of livestock vaccines and pet-care medicines. The country also produces airline fueling pumps. These marsupials eat only the leaves and bark of certain types of eucalyptus trees.
Koalas are nocturnal, which means they are active at night and sleep during the day.
As the name implies, koalas almost never drink, but get their liquid from food. They live alone or in small groups high in the forest canopy. Wombats Wombats are nocturnal marsupials that live in the mountains and eastern forests of Australia. Kangaroos Kangaroos are marsupials - mammals that carry their young in pouches. Australia is home to a large variety of kangaroos.