I have a 5 year old rabbit who doesn’t eat hay, she only eats hay cubes. It’s not enough though. We took her to the vet today and the vet said it seems like she’s beginning to develop GI stasis. I know this can kill bunnies which is why I want to know if grass is a good substitute for hay. I’ve done everything to try and get her to eat hay but she literally thinks it’s a toy. I recently started growing wheat grass and she actually ate it which was shocking to me since she’s so picky. I know grass has fiber which is why I’m asking if it’s enough. If so, which grass has the highest amount of fiber?