of this species is very similar to the diet of another Australian toadlet, Pseudophryne coriacea. They primarily feed on small invertebrates present in leaf litter, such as small ants and greenflys. However, there seems to be no selection in the type of prey that this species will consume. They will consume any arthropod that becomes available to them in the leaf litter present in their habitat. Small black ants are the most common source of food for this species. This species also produces pumiliotoxins (PTXs) that deter predators through their diet. While the mechanism of this acquisition is unknown, consumption of certain alkaloids in their diet allows the toadlet to produce PTXs that deter predators like snakes. These toxins are similar to the compounds secreted by the Poison Dart frogs from South America. Because of the toxic nature of PTXs, snake species avoid feeding on these frogs. The only real known predator of the P. Bibronii is Limnodynastes peronii, also known as the two striped grass frog. Bones of the Bibron's toadlet have been found in the gut content of two striped grass frogs in the Wallingat State Forest in New South Wales, Australia. Behaviour This species inhabits areas that are likely to be flooded after rain. This can be anything from coastal swamps, creeks, temporary ponds/roadside ditches in forest, cleared land, heathland and even sub-alpine areas. When threatened, the Bibron's toadlet will often lie on its back, unresponsive, pretending to be dead. This performance had been reported to last for up to an hour. Reproduction The males attract the females by making a grating "cre-eek" noise from a concealed area, in mud, under rocks, or within damp leaf litter. Breeding season begins after the heavy rains during the Australian autumn months of March, April, and May, and proceeds for four to five months after. Most breeding and mating occurs at night and can occur at cold temperatures. The species is polyandrous, with each female mating with several males. The female visits up to eight males, mates with each, and deposits eggs in the shallow nest he has dug. As the female releases the eggs in the nest, the male grabs the female by the inguinal amplexus and fertilizes the eggs as they are being released by the female. The female moves on and the male tends to the nest. The nest, which may contain moist leaf litter or sphagnum