The Bronze Quoll is a nocturnal predatory species occurring in savannah woodlands. The habitat is reduced during the wet season when much of the lower lying areas are inundated with water, confining both predator and prey species to smaller "islands” of habitat. Individuals have been caught raiding chicken houses, and there is a report from locals of a female with young being found in a newly dug (empty) pit toilet at Serki village in April 2006.

Little is known about the biology of this species; Woolley (2001) has recorded observations on reproduction and suggested that this species is a seasonal breeder. A clear distinction in size and weight among 12 individuals was observed, suggesting that two cohorts were represented (S. Hamilton pers. comm.). It is thought to live for a maximum of three years.

Dasyurus spartacus is the only mammal in New Guinea (Indonesia and Papua New Guinea) restricted to the Trans-Fly ecoregion in the southern part of the island that cannot also be found in Northern Australia (Helgen and Oliver 2004). This species is thought to range in elevation from 0 m to 200 m asl (S. Hamilton pers. comm.), but it has only been recorded from 0 m to 60 m asl. It has not been recorded north of the Fly River although patches of suitable habitat exist in these areas.

This species occurs in Wassur National Park (Papua Province, Indonesia) and Tonda Wildlife Mangement Area (Papua New Guinea). Further studies into the distribution, natural history, and threats to Bronze Quolls are needed (especially interactions with introduced species).