All species are arboreal, living in anything from open woodland to closed rainforests. They are nocturnal, spending the days in nests, normally in tree hollows. They are active climbers, running up and down thick tree trunks (also descending head first) as well as along horizontal or inclined
A striped possum (Dactylopsila trivirgata) uses its long fourth finger to extract larvae from wood. (Illustration by Jarrod Erdody)
branches and boughs. P. breviceps, as found in both field and laboratory studies, regularly experience daily torpor in winter, usually after several days of food withdrawal or restriction. Body temperatures drop to about 50°F (10°C) in these periods.
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