About 57 percent is moderately marbled Choice , the most common supermarket grade . Humans began domesticating cattle , Bos taurus , about 8,500 years ago . The domestication of animals is a complex process that involves many different species and takes thousands or millions of years to complete. Most of us tend to stick with beef cuts we know .
Humans began domesticating cattle , Bos taurus , about 8,500 years ago . The domestication of animals is a complex process that involves many different species and takes thousands or millions of years to complete. Most of us tend to stick with beef cuts we know .