Bos Frontalis
The gayal (''Bos frontalis''), also known as the Drung ox or mithun, is a large domestic cattle distributed in Northeast India, Bangladesh, Myanmar and in Yunnan, China.Simoons, F. J. (1984). ''Gayal or mithan''. In: Mason, I. L. (ed.) ''Evolution of Domesticated Animals''. Longman, London. Pages 34–38. Taxonomy In his first description of 1804, Aylmer Bourke Lambert applied the binomial ''Bos frontalis'' to a domestic specimen probably from Chittagong. In 2003, the International Commission on Zoological Nomenclature fixed the first available specific name based on a wild population that the name for this wild species is valid by virtue of its being antedated by a name based on a domestic form. Most authors have adopted the binomial ''Bos frontalis'' for the domestic species as valid for the taxon. Phylogenetic analysis corroborates the taxonomic assessment that the gayal is an independent ''Bos'' species originating matrilineally from gaur, zebu and cattle. Charact ...
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Gaur
The gaur (''Bos gaurus''; ), also known as the Indian bison, is a bovine native to South Asia and Southeast Asia, and has been listed as Vulnerable on the IUCN Red List since 1986. The global population was estimated at a maximum of 21,000 mature individuals in 2016, with the majority of those existing in India. It has declined by more than 70% during the last three generations, and is extirpated from Sri Lanka and most likely Bangladesh. Populations in well-protected areas are stable and increasing. It is the largest species among the