Why do cats eat grass just to throw it up?
March 5, 2004 8:10 AM Subscribe
When I let my cats outside on a sunny spring day, the first thing they do is eat grass. They're like miniature lawnmowers. Later, they hack the grass back up (like a hairball). Why do they do this? (Meaning: why do they eat the grass in the first place, and why do they then spit it back up?)