Why do cats eat grass (esp. b/c they/she just throw it up)?
Will my cat stop eating grass if she gets used to being outside?
This is a very common kitty malady. Or habit, whatever you'd like to call it. Every single time we let our cats outside (which is not often partially due to this situation) they head immediately to the grass to start mowing. So kind of them. To mow the grass for us.
I think there are two reasons for this. One is physiological.Cats cannot digest grass and they will always throw it up. They somehow know this and when they can't get a hairball to pass (gross, I know) they will eat grass or a plant to take care of the situation.
The other reason I believe that cats eat grass is because they can. It's different. It's not something they usually eat. It's a different and interesting texture and taste in their mouth. They are weird like that. Why does a cat climb into a plastic bag or a cardboard box? Because they can.
Unfortunately Heather, Teva will not stop this practice if she becomes accustomed to the outdoors. She'll just have more ready access to it. However, she may be more likely to "get rid of" the grass/hairball outside as opposed to bringing it in for you to clean up. If you see her eating the grass, give her a little time before bringing her back in and you'll save plenty of money on paper towels.