Lying down and chewing cud is a crucial part of a cow’s digestive process, new research has confirmed, rather than a sign of laziness. Cattle have evolved to graze without extensive chewing, in order ...

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 ...