The small woolly bat feeds on small insects whilst in flight. It emits echolocation pulses through its mouth starting at 173 kHz and falling to 77 kHz immediately before a catch. The calls last just two milliseconds, but occur in groups of two to four (2). It is able to dodge leaves and branches in the densest forest using its short, wide wings (6).
Pregnancy most commonly occurs during February and May, and lactation is from May to July. There seems to be a second, smaller breeding season from August to October (2). Each female gives birth to a single pup, weighing around a quarter of her own weight. The pup accompanies its mother on foraging trips, at first clinging to her belly and later flying alongside as it learns to forage alone. At one year the pup becomes sexually mature (6).