 Cases have been recorded of male dunnarts in captivity that continued to breed at five years of age, and female dunnarts in captivity that continued to breed at three years of age.The sandhill dunnart can be found in sandy, arid and semi-arid regions with Spinifex grass hummocks in Australia.Because of the dunnart's distinct and limited habitat needs, Spinifex hummocks are an essential part of its environment.