Dave Watts / Common Wombat (Vombatus ursinus). Tasmania, Australia, February.

Dave Watts,Dave Watts / Forester Kangaroo family {Macropus giganteus tasmaniensis} a subspecies of Eastern Grey Kangaroo, Tasmania, Australia.

Alex Mustard / An Australian Sea Lion (Neophoca cinerea) bathing in the sun at the surface. Kangaroo Island, South Australia, Australia. Southern Ocean. November

SIMON KING / Male Dingo {Canis dingo} face portrait, Central Australia

Dave Watts / Male Eastern grey kangaroos boxing at sunset {Macropus giganteus} Australia. DIGITAL COMPOSITE

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

John Cancalosi / Common brushtail possum {Trichosurus vulpecula} young suckling on teat in mother's pouch, Australia, captive

Dave Watts / Platypus swimming underwater {Ornithorhynchus anatinus} Australia - digital composite

Inaki Relanzon / Australian Black Swan (Cygnus atratus) Bay of Shoals, Kingscote, Kangaroo Island, South Australia State, Australia.

Steven David Miller / Sulphur-crested cockatoo {Cacatua galerita galerita}~perched with crest raised, Grampians National Park, Victoria, Australia

David Tipling / Satin Bowerbird (Ptilonorhynchus violaceus) male depositing blue pen at bower, Lamington NP, Queensland, Australia, September

Owen Newman / Flock of wild Budgerigars {Melopsittacus undulatus} in flight, Sturt NP, New South Wales, Australia.

Juergen Freund / Split level of snorkeler underwater in freshwater pond. Florida USA