First report of leucism in Critically Endangered banteng ( <i>Bos javanicus</i> ) in Huai Kha Khaeng Wildlife Sanctuary, Thailand

Abstract Observation and camera traps were employed to document leucisistic and normal banteng ( Bos javanicus ). In 2016, the first leucistic banteng was found in Huai Kha Khaeng Wildlife Sanctuary. In 2022, this leucistic individual was seen together with both a one-year-old and a two-year-old leucistic banteng in a saltlick 240 m from the river. These were assumed to be calves of a mature leucistic female. Pure white (leucism) and creamy (isabellinism) color patterns were observed. In 2025, five leucistic bantengs were found in the same saltlick. This finding could contribute to planning for the welfare and conservation of leucistic banteng.