The majority of dasyurids for which spacing patterns have been studied occupies undefended home ranges that overlap with other individuals of both sexes. The females of two species of quolls maintain a core or major part of their home range exclusive to other females, but overlap with several males. The mechanism of territorial defense is not known. At the other extreme, among very small arid-zone dasyurids, drifting home ranges, transience, and high mobility are common. Very long-distance movements relative to the diminutive size of these animals have been recorded, including movements in excess of 0.6 mi (1 km) in 24 hours in the 1.05 oz (30 g) white-footed dunnart (Sminthopsis leucopus). This strategy is adaptive in environments where insect prey abundance is low and unpredictable.

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