AZ Animals on MSN

How Cows Digest Grass with Their Four-Stomach System

Cows, along with sheep, goats, deer, antelope, bison, buffalo, moose, elk, and reindeer, are all ruminants. These are mammals ...
Live Science on MSN

What causes the feeling of 'butterflies' in your stomach?

Flutters, knots and other stomach sensations tied to nervousness are all examples of the gut-brain axis in action.