Dave Watts / Eastern grey kangaroo (Macropus giganteus) with joey in pouch, Australian Capital Territory, Australia, September

Jouan & Rius / Koala (Phascolarctos cinereus) juvenile in tree, Otway National Park, Victoria, Australia

Dave Watts / Platypus {Ornithorhynchus anatinus} swimming underwater Tasmania, Australia. Composite.

Dave Watts / Koala with young in tree {Phascolarctos cinereus} Queensland, Australia

Ingo Arndt / Head portrait of Eastern grey kangaroo {Macropus giganticus} Australia

Dave Watts / Female Western grey kangaroo (Macropus fuliginosus) rolling with a large joey in her pouch, Kangaroo Island, South Australia.

Dave Watts / Female Tamar wallaby (Macropus eugenii) grazing with a joey in her pouch, Kangaroo Island, South Australia.

Dave Watts / Koala (Phascolarctos cinereus), eating Eucalyptus leaves, Victoria, Australia.

Ingo Arndt / Yellow-footed rock wallaby (Petrogale xanthopus) Australia, December

Ingo Arndt / Eastern grey kangaroo {Macropus giganteus} juvenile, Australia

Ingo Arndt / Eastern grey kangaroo with joey suckling (Macropus giganteus) Australia

Ingo Arndt / Eastern grey kangaroos sparring {Macropus giganteus} Australia