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Prehistoric Procoptodon goliath stood 6 1/2 ft. tall and weighed approximately 500 lbs. Scientists believe they walked rather than hopped. Australia during the Pleistocene.
Aurochs bull (Bos primigenius Bojanos), an extinct species of large wild cattle that inhabited Europe, Asia, and North Africa. The species, which survived in Europe until 1627, is the ancestor of domestic cattle.
