Unisexual Salamander (IMAGE) Ohio State University Caption Unisexual salamanders contain DNA of up to five species and reproduce primarily by cloning themselves. Credit Kevin Fitzsimons, The Ohio State University Usage Restrictions With credit to Fitzsimons, OSU License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.