Japanese giant salamanders are the second largest salamanders in the world. Five Japanese giant salamanders – three males (Bob, Dieter and Sven) and two females (Hetsue and Helga) – arrived in 1999 from Japan’s Asa Zoo. In 2018, all five salamanders moved into a new habitat at the Detroit Zoo. Their new habitat is twice the size of their original home and provides new physical and social opportunities.