WHY DO DOGS EAT GRASS?
Many dogs will vomit after eating grass. Did they eat the grass to make them vomit? Or did they vomit because they ate grass? It is a mystery, but it seems that some dogs may eat vegetation when they have an upset stomach.
Another reason – they just like it. Some dogs have certain species of grass or plant material that they will search out and eat.
In any case, grass eating is basically a normal behavior, and is not of concern unless your dog does it excessively. I think my dog, Sissy may be part cow because she likes to eat a lot of grass, but she doesn’t vomit. Maybe it just settles her stomach.