Well mine eat it too...and they like the new, really green, fresh grass..LOL I heard they eat it because it settles their stomach.
Wonder if it'll settle my stomach the next time it's upset..
Uh...I won't be finding out.
Mine have never thrown up after doing it either. Good question though..who knows...
Just like I wanna know what's so good about geese poop...or deer poop... ewww