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. There are large red and gray kangaroos and even tree kangaroos.
Kangaroos live together in small groups called mobs.
A young kangaroo is called a joey. Kangaroos use their long tails to keep their balance when jumping or running. They have been known to jump 10 feet high and travel at speeds up to 40 mph. The platypus is a monotreme mammal about the size of a cat. Monotremes are mammals that lay eggs.