A pleasant surprise from my last trip to Khao Yai National Park, a very lucky sighting of a male smooth-coated otter (Lutrogale perspicillata). He was sunning himself on a river bank totally (seemingly) oblivious to my approach. With the help of a long lens and cover from the opposing river bank trees I was able to watch him sunning himself for a good 3 minutes before he slipped back into the cool flowing water again and headed off to explore further upstream.