I have seen this twice with my dogs: She begs to go outside like it's and emergency, and then frantically (sp?) eats grass like it's the last thing she'll ever do. Rita had a spell of this several years ago for several days. I wormed her and the problem stopped. I can't say for sure that the worming did it or if the timing of it just coincided with the end of the grass eating. Now this evening the dogs were happily chewing on beef bones (safe ones that they can't swallow), there was a little meat left on the bones, and marrow. Lady coughed, just one cough, and then all of a sudden she jumped up, demanded to go out, and started eating grass like crazy. She ate grass for 5 or 10 minutes until I finally made her quit and come in. She seems fine now, but I wonder if this is the sign of a problem. Does anyone have any ideas?