It drives me bananas that my dogs eat grass. My 11 year old Ridgeback has always sampled grass - especially if in a new environment. I'm not sure that she eats it but she definitely puts her mouth on it. I adopted a puppy in June and she's learned this behavior from the older dog. Sometimes at night they look like a couple of cows in the yard. It drives me crazy. It's not anything that requires a vet visit because it's behavioral. I'm just not sure how to get them to stop. Especially the puppy. She's more compulsive about it - habitually chomping through the grass and I know she actually eats it.