Domestication of the aurochs (urus, Bos primigenius), a type of large wild cattle which evolved in India about two million years ago, and migrated to Asia, and North Africa, reaching Europe about 250,000 years ago, is thought to have occurred in several parts of the world about 6000 BCE.
"The aurochs was regarded as a challenging hunting quarry animal, contributing to its extinction. The last recorded aurochs, a female, died in 1627 in the Jaktorów Forest, Poland, and her skull is now the property of the Livrustkammaren ("Royal Armory") museum in Stockholm, Sweden.
"Representations and descriptions of aurochs appear in prehistoric cave paintings, in Julius Caesar's The Gallic War, and as the national symbol of many European countries, states and cities such as Alba-Iulia, Kaunas, Romania, Moldavia, Turka, Mecklenburg, and Uri. The Swiss canton Uri was named after this animal species" (Wikipedia article on Aurochs, accessed 12-25-2011).