Bruce Thomson / Spotted-tailed quoll (Dasyurus maculatus) at night, portrait, New South Wales, Australia. Camera trap.

Bruce Thomson / Spotted-tailed quoll (Dasyurus maculatus gracilis) foraging in rainforest at night, Wet Tropics World Heritage area, Northern Queensland, Australia. Endangered.

Joel Sartore / Photo Ark / Tiger quoll (Dasyurus maculatus), aged 3 years, calling, portrait, Moonlit Sanctuary Wildlife Park. Vulnerable. Captive.

Doug Gimesy / Portrait against black of a Tiger quoll (Dasyurus maculatus) on a log. Captive. Conservation Ecology Centre, Otway Lighthouse Rd, Victoria, Australia, June. Property released.

Dave Watts / Spotted-tailed quoll (Dasyurus maculatus) resting on Banksia branch, Tasmania, Australia

Dave Watts / Spotted-tailed quoll (Dasyurus maculatus) juvenile, Tasmania, Australia

Doug Gimesy / Tiger quoll (Dasyurus maculatus) portrait. Controlled conditions, Conservation Ecology Centre, Victoria, Australia.

Doug Gimesy / Tiger quoll (Dasyurus maculatus) portrait. Controlled conditions, Conservation Ecology Centre, Victoria, Australia.

Jiri Lochman / Spotted-tailed quoll (Dasyurus maculatus) at night, Cradle Mountain-Lake St Clair National Park, Tasmanian Wilderness UNESCO Natural World Heritage Site, Tasmania, Australia.

Jiri Lochman / Spotted-tailed Quoll (Dasyurus maculatus) at night, Cradle Mountain-Lake St Clair National Park, Tasmanian Wilderness UNESCO Natural World Heritage Site, Tasmania, Australia.