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

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

Juergen & Christine Sohns / Koala (Phascolarctos cinereus), Parndana, Kangaroo Island, South Australia, Australia

Suzi Eszterhas / Koala (Phascolarctos cinereus) mother mother cuddling her seven-month-old joey, Queensland, Australia

Suzi Eszterhas / Koala (Phascolarctos cinereus) mother cuddling her seven-month-old joey, Queensland, Australia

Roland Seitre / Koala (Phascolarctos cinereus) in tree, Port Lincoln, South Australia, Australia

Inaki Relanzon / Koala (Phascolarctos cinereus) with young in tree, Great Otway National Park, Victoria State, Australia.

Inaki Relanzon / Koala (Phascolarctos cinereus) curled up sleeping in tree, Great Otway National Park, Victoria State, Australia.

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) eating eucalyptus leaves, native to Australia

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) in eucalyptus tree, native to Queensland

Jouan & Rius / Koala (Phascolarctos cinereus) juvenile, sitting on the ground, Otway National Park, Victoria, Australia

Jouan & Rius / Koala (Phascolarctos cinereus) mother with young, Queensland, Australia