On America’s large dairy farms, milking is a vast operation, and the potential for disease transmission is worrying, health experts say. On America’s large dairy farms, milking is a vast operation, ...

Cows, along with sheep, goats, deer, antelope, bison, buffalo, moose, elk, and reindeer, are all ruminants. These are mammals with four compartments in their digestive system that let them re-chew and ...