False
There have been many theories as to why dogs do this, but very little research. However, in one study conducted at UC Davis University, researchers found that grass eating was common since 68% of dogs ate grass on a daily or weekly basis. Only 8% of dogs frequently showed signs of illness before eating grass and only 22% of dogs regularly vomited afterwards. In the grass eating dog population they found that it was the younger dogs who ate grass most frequently and they were less likely to appear sick before or to vomit afterwards. The research did find, however, that if a dog showed signs of illness before eating grass it was more likely to vomit afterwards.
