Old McDonald had a farm (e-i-e-i-o) and on his farm he had a cow (e-i-e-i-o). Old McDonald may have had a farm and he may have had a cow, but Old McDonald never had a cow like the ones at Ohio State.

The world is home to about 1.5 billion cows, most of them bred and raised for the meat and dairy industry. Each of them has a quadripartite stomach, whose largest section is called rumen. An adult cow ...