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Bos javanicus, commonly known as the banteng, is a species of mammal in the family Bovidae. It belongs to the genus Bos and was described by D'Alton in 1823. The animal is classified within the order Artiodactyla, class Mammalia, phylum Chordata, and kingdom Animalia. It is diurnal and inhabits forest environments.

The species is listed as Critically Endangered by the IUCN Red List as of 2025. Its range includes South and Southeast Asia, with records from Indonesia, Vietnam, Burma, and Malaysia. In the United States, specimens are held by institutions such as the American Museum of Natural History and the California Academy of Sciences. The gestation period is 285 days, and the longest observed lifespan is 27.1 years.