A type of marsupial is the KOALA, which has five letters in its name. Koalas are native to Australia and are known for their distinctive grey fur and large ears. Another type of marsupial is the KANGAROO, which has eight letters in its name. Kangaroos are also native to Australia and are well-known for their ability to hop and carry their young in a pouch. A third type of marsupial is the OPOSSUM, which has seven letters in its name. Opossums are found in North and South America and are known for their prehensile tails and defensive hissing. Finally, a fourth type of marsupial is the roo, which has three letters in its name. Roo is a colloquial term for KANGAROO, and is used to refer to any species of KANGAROO.