Kai grazes like cattle also! I bought him something at a pet store. I think it's "oat grass". I've also seen "pet grass" somewhere on the net. I figured it's got to be better for him rather than eating the junk in our backyard. I was thinking that it could be the nutrition they're looking for (like amber said) or maybe it's just a habit. I say, look into the oat or pet grass. If kai's going to munch on grass, I'd rather him munch on this stuff rather than the grass/weeds in our backyard. It said that it aids with digestion...so I'm assuming dogs pass it through cleanly rather than greeting you with a warm welcome and "gift" on the floor.