Mitsuaki Iwago / Red Kangaroo (Macropus rufus) mother embracing joey, Sturt National Park, New South Wales, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) mother with joey, eastern temperate Australia

Matthias Breiter / Rainbow Lorikeet (Trichoglossus haematodus) pair interacting, Noonamah, Northern Territory, Australia

Matthias Breiter / Great Bowerbird (Chlamydera nuchalis) male displaying in front of female in lek, Australia

Mitsuaki Iwago / Koala (Phascolarctos cinereus) in a line on ground, Australia

Shin Yoshino / Koala (Phascolarctos cinereus) mothers and babies in tree, Australia

Shin Yoshino / Koala (Phascolarctos cinereus) group sitting on branch, Lone Pine Koala Sanctuary, Brisbane, Australia

Martin Willis / Splendid Fairywren (Malurus splendens) female and juvenile preening, Mount Barker, South Australia, Australia

Konrad Wothe / Royal Penguin (Eudyptes schlegeli) pair, Macquarie Island, Australia

Mitsuaki Iwago / Silver Gull (Larus novaehollandiae) affectionate pair, Australia

Mitsuaki Iwago / Australian Sea Lion (Neophoca cinerea) pup nuzzling mother, Kangaroo Island, Australia

Konrad Wothe / King Penguin (Aptenodytes patagonicus) parent grooming chick, Macquarie Island, sub-Antarctica Australia