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

Juergen Freund / Margit Cianelli wildlife carer with young Lumholtz kangaroos (Dendrolagus lumholtzi), one with a radio collar. The tree kangaroo has a radio collar to allow her to explore her forest surroundings read...

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

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

Ingo Arndt / Eastern grey kangaroo joey looking out of pouch, Wilsons Promontory NP Australia

Ingo Arndt / Eastern grey kangaroo female with joey peering out of pouch {Macropus giganteus}. Wilson Promontory NP Australia

Konrad Wothe / Lumholtz's Tree-kangaroo (Dendrolagus lumholtzi) sitting on branch in rainforest, Atherton Tablelands, Queensland, Australia, October

Dave Watts / Eastern grey kangaroo (Macropus giganteus) bounding, Australian Capital Territory, Australia, September

Dave Watts / Eastern grey kangaroo (Macropus giganteus) family group, male, female and large joey, Tasmania, Australia, February

Dave Watts / Eastern grey kangaroo (Macropus giganteus) two males boxing, Australian Capital Territory, Australia, December

Jouan & Rius / Red kangaroo (Macropus rufus) male, Flinders Ranges National Park, South Australia, Australia

Jouan & Rius / Red kangaroo (Macropus rufus) male standing on back legs, Flinders Ranges National Park, South Australia, Australia

Jouan & Rius / Western Grey Kangaroos (Macropus Fuliginosus) pair hopping away across sand dunes, Mungo National Park, New South Wales, Australia

Jouan & Rius / Tammar wallaby (Macropus eugenii), Kangaroo Island, South Australia, Australia

Jouan & Rius / Eastern grey kangaroo (Macropus giganteus) resting on beach, Queensland, Australia

Jouan & Rius / Eastern grey kangaroo (Macropus giganteus), Queensland, Australia

Warwick Sloss / Male Red kangaroo {Macropus rufus} feeding, Fowlers Gap Research Station, New south wales, Australia

Pete Oxford / Eastern Grey Kangaroo (Macropus giganteus) silhouette on coal mine site, Australia, 2006

Staffan Widstrand / Eastern grey kangaroo {Macropus giganteus} grazing with joey in pouch, Wilsons Promontory NP, Australia

Dave Watts / Silhouette of Eastern Grey Kangaroo {Macropus giganteus} males boxing, New South Wales, Australia.

Dave Watts / Bridled nailtail wallaby {Onychogalea fraenata} Australia. Endangered

Pete Oxford / Eastern grey kangaroo resting {Macropus giganteus} Tasmania, Australia.

Dave Watts / Red kangaroo male bounding towards camera. {Macropus rufus) NSW, Australia. The kangaroo is the animal long jump champion , able to clear 13m (the length of a bus) from a standing start. the human rec...

Owen Newman / Female Red kangaroo backlit at sunset {Macropus rufus} Sturt NP New South Wales Australia

Owen Newman / Female red kangaroo backlit in evening sun {Macropus rufus} Sturt NP NSW Australia

Owen Newman / Male Red kangaroos fighting {Macropus rufus} Sturt NP, New South Wales Australia

Staffan Widstrand / Eastern grey kangaroo with joey in pouch {Macropus giganteus} Wilsons promontory NP, Australia

Staffan Widstrand / Eastern grey kangaroo hopping {Macropus giganteus}, Australia

Dave Watts / Musky rat kangaroo {Hypsiprymnodon moschatus} Queensland, Australia

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

David Gallan / Eastern grey kangaroos (Macropus giganteus) drinking from bird bath as a bushfire burns in the surrounding forest. Sky reddened by ash and smoke. Tathra, New South Wales, Australia. January 2020.

David Gallan / Desperately thirsty eastern grey kangaroos (Macropus giganteus) drink from a bird bath following a bushfire in Tathra, New South Wales, Australia. Water holes had dried up due to drought and food was...

Steven David Miller / Eastern grey kangaroo (Macropus giganteus), two males fighting. Grampians National Park, Victoria, Australia.

Juergen Freund / Lumholtz kangaroos (Dendrolagus lumholtzi) juvenile in house of Margit Cianelli, wildlife carer. Lumholtz Lodge, Atherton Tablelands, Queensland, Australia Model released.

Ashley Cooper / Kangaroos skeleton which died during drought which lasted from 1996-2011. Victoria, Australia, February.

Dave Watts / Two male Eastern grey kangaroos (Macropus giganteus) play fighting and hopping away, Narawntapu National Park, Tasmania, Australia.

Dave Watts / Family of Eastern grey kangaroos (Macropus giganteus) grazing, Narawntapu National Park, Tasmania, Australia.

Dave Watts / Family of Eastern grey kangaroos (Macropus giganteus) grazing, Narawntapu National Park, Tasmania, Australia.

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

Ingo Arndt / Eastern grey kangaroo {Macropus giganteus} joey suckling from mother, Australia

Ingo Arndt / Eastern grey kangaroo {Macropus giganteus} Australia

Ingo Arndt / Close up of foot of Eastern grey kangaroo {Macropus giganteus}

Ingo Arndt / Eastern grey kangaroo joey in pouch {Macropus giganteus} Victoria, Australia.

Ingo Arndt / Eastern grey kangaroo joey in mother's pouch {Macropus giganteus} Australia.

Ingo Arndt / Eastern grey kangaroo + young {Macropus giganteus} Australia

Ingo Arndt / Mother and young Eastern grey kangaroo portrait {Macropus giganteus} Australia

Ingo Arndt / Eastern grey kangaroo group {Macropus giganteus} Australia.

Ingo Arndt / Group of Eastern grey kangaroos {Macropus giganteus} Victoria, Australia

Ingo Arndt / Male & female Eastern grey kangaroos {Macropus giganteus} Victoria

Ingo Arndt / Eastern grey kangaroo scratching {Macropus giganteus} Australia

Ingo Arndt / Eastern grey kangaroo female with joey {Macropus giganteus} Wilson Promontory NP Australia

Ingo Arndt / Eastern grey kangaroo {Macropus giganteus} female with joey with its paw in her pouch, Wilson Promontory NP, Victoria, Australia

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

Ingo Arndt / Eastern grey kangaroo {Macropus giganteus} female scratching belly, Australia

Steven David Miller / Eastern Grey Kangaroo (Macropus giganteus) orphan joey in care, Wildlife Habitat, Queensland, Australia, Captive

Steven David Miller / Eastern Grey Kangaroo (Macropus giganteus) orphan joey in care, Wildlife Habitat, Queensland, Australia, Captive

Mark MacEwen / Eastern Grey Kangaroo (Macropus giganteus) in pouch, on Angelsea golf course, Victoria, Australia, October

Aflo / Two grey kangaroos (Macropus fuliginosus) standing in grassland, Australia

Aflo / Eastern Grey Kangaroo (Macropus giganteus) herd, Australia, captive

Dave Watts / Lumholtz's Tree Kangaroo (Dendrolagus lumholtzi) female perched on tree branch.Queensland, Australia, November. Digital composite.

Dave Watts / Lumholtz's Tree Kangaroo (Dendrolagus lumholtzi) female perched on tree branch. Queensland, Australia, November. Digital composite.

Dave Watts / Lumholtz's Tree Kangaroo (Dendrolagus lumholtzi) male perched on tree branch. Queensland, Australia, November.

Dave Watts / Lumholtz's Tree Kangaroo (Dendrolagus lumholtzi) male perched on tree branch. Queensland, Australia, November.

Dave Watts / Lumholtz's Tree Kangaroo (Dendrolagus lumholtzi) male perched on tree branch. Queensland, Australia, November.

Steven David Miller / Eastern grey kangaroo (Macropus giganteus) joey drinking from mother's pouch, Grampians National Park, Victoria, Australia, May

Steven David Miller / Female Eastern grey kangaroo (Macropus giganteus) standing next to joey, Grampians National Park, Victoria, Australia, May

Steven David Miller / Female Eastern grey kangaroo (Macropus giganteus) standing in grass with joey looking out of pouch, Grampians National Park, Victoria, Australia, May

Steven David Miller / Female Eastern grey kangaroo (Macropus giganteus) resting in grass, Grampians National Park, Victoria, Australia, May

Steven David Miller / Eastern grey kangaroo (Macropus giganteus) pair mating, Grampians National Park, Victoria, Australia, May

Steven David Miller / Eastern grey kangaroo (Macropus giganteus) pair mating, Grampians National Park, Victoria, Australia, May

Steven David Miller / Female Western grey / Black-faced / Mallee kangaroo (Macropus fuliginosus) feeding with joey looking out of pouch, Flinders Ranges National Park, South Australia, May

Steven David Miller / Western grey / Black-faced / Mallee kangaroo (Macropus fuliginosus) joey looking out of pouch, Flinders Ranges National Park, South Australia, May

Steven David Miller / Western grey / Black-faced / Mallee kangaroo (Macropus fuliginosus) joey looking out of pouch, Flinders Ranges National Park, South Australia, May

Steven David Miller / Female Western grey / Black-faced / Mallee kangaroo (Macropus fuliginosus) foraging with joey looking out of pouch, Flinders Ranges National Park, South Australia, May

Steven David Miller / Western grey / Black-faced / Mallee kangaroo (Macropus fuliginosus) joey looking out of pouch, Flinders Ranges National Park, South Australia, June

Steven David Miller / Western grey / Black-faced / Mallee kangaroo (Macropus fuliginosus) joey looking out of pouch, Flinders Ranges National Park, South Australia, June

Steven David Miller / Female Bennett's tree kangaroo (Dendrolagus bennettianus) sitting in tree, captive in breeding program, The Wildlife Habitat, Port Douglas, North Queensland, Australia, August

Steven David Miller / Female Bennett's tree kangaroo (Dendrolagus bennettianus) sitting in tree, captive in breeding program, The Wildlife Habitat, Port Douglas, North Queensland, Australia, August

Inaki Relanzon / Western Grey Kangaroo (Macropus fuliginosus) mother with joey in pouch, Kangaroo Island, South Australia State, Australia.

Inaki Relanzon / Red Kangaroo (Macropus rufus) lying dead on the road after being killed by a car, South Australia State, September 2011.

Konrad Wothe / Lumholtz's tree kangaroo (Dendrolagus lumholtzi) sitting in rainforest tree, North Queensland, Australia, October

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

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

Dave Watts / Eastern grey kangaroo (Macropus giganteus) mob grazing, Australian Capital Territory, Australia, December 2010

Dave Watts / Eastern grey kangaroo (Macropus giganteus) juvenile, portrait, Australian Capital Territory, Australia, September

Dave Watts / Eastern grey kangaroo (Macropus giganteus) male portrait, Australian Capital Territory, Australia, October

Dave Watts / Eastern grey kangaroo (Macropus giganteus) bounding, Australian Capital Territory, Australia, September

Dave Watts / Eastern grey kangaroo (Macropus giganteus) juvenile, Australian Capital Territory, Australia, December

Dave Watts / Eastern grey kangaroo (Macropus giganteus) two males boxing, Australian Capital Territory, Australia, December

Dave Watts / Eastern grey kangaroo (Macropus giganteus) juvenile, portrait, Australian Capital Territory, Australia, December

Dave Watts / Eastern grey kangaroo (Macropus giganteus) female and large joey, Tasmania, Australia, February

Dave Watts / Eastern grey kangaroo (Macropus giganteus) female and large joey, Tasmania, Australia, February

Dave Watts / Eastern grey kangaroo (Macropus giganteus) female and large joey, Tasmania, Australia, February

Dave Watts / Eastern grey kangaroo (Macropus giganteus) family group, male, female and large joey, Tasmania, Australia, February