As for all our local microbats, Gould's Wattled Bats go into torpor during winter. Torpor is a sort-of "shallow hibernation", and helps the animal survive the cold months when insects and other invertebrates are difficult to find.
After mating, females can store the sperm for more than 33 days. The gestation period is 3 months, with the young (often twins) born during November or December in the Melbourne area. The young remain attached to the teat while the mother flies to hunt for food.
When foraging for food, a Gould's Wattled Bat may travel more than 10km. Some individuals switch roosts frequently, while others may use the same roost for up to 14 days.
Natural predators include owls, butcherbirds and currawongs. Domestic cats are also known to kill these bats.
https://www.bayfonw.org.au/species/bat/goulds-wattled-bat