The answer should be marsupials.
Marsupials are usually animals that carry their young in pouches. Examples are such as kangaroos, koalas, wombats etc.
On the other hand, kangaroos is just an example, just a specie that carries their young in pouches, instead of the group "collectively called". Anzac animals are just the animals that accompany soldiers from the world war ii, which includes anything like dogs or chicken and more. And last but not least, eucalyptuses are evergreen from Australia, that has nothing to do with animals.
Therefore, your answer should be marsupials.
