Heck cattle are a hardy breed of domestic cattle. These cattle are the result of an attempt by Heinz and Lutz Heck to breed back the extinct aurochs (Bos primigenius) from modern aurochs-derived cattle in the 1920s and 1930s. Controversy revolves around methodology and success of the programme. There are considerable differences between Heck cattle and the aurochs in build, height, and body proportions. Furthermore, there are other cattle breeds which resemble their wild ancestors at least as much as Heck cattle.
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