Very little known is known about the ecology and biology of this turtle (2), and much of the available information comes from the introduced populations in Hawaii. Nesting is believed to take place in June in Hawaii, with clutches of 3 to 28 eggs hatching in late August or September. The shells of the hatchlings measure between 54 and 58 millimetres across and are orangish-brown with scattered black spots (5).
The wattle-necked softshell turtle is primarily carnivorous. In captivity, it has consumed a wide range of foods including fish, raw beef, horse meat, mice, crickets, molluscs, amphibians, and some plant materials (5).