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Nature 449, 124 (13 September 2007) | doi:10.1038/449124a; Published online 12 September 2007

Mystery ox finds its identity

Ewen Callaway

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Near-extinct kouprey reclassified as distinct species.

The kouprey, an enigmatic Asian ox believed to be a hybrid — and so, unworthy of conservation efforts — is in fact a distinct species related to the banteng (a wild ox)1. The conclusion contradicts earlier findings2 that the horned beast is a cross between the banteng and domesticated zebu cattle.