In Huai Kha Khaeng, Thailand, the smooth-coated otters extensively use the slowly meandering river near the dam and the dam itself (Kruuk et al. 1994).The smooth-coated otter is predominantly a fish eater, but supplements its diet with shrimp/crayfish, crab and insects, and other vertebrates such as frog, mudskippers, birds and rats (Prater 1971, Foster-Turly 1992, Hussain and Choudhury 1998).