There are many common opinions about why dogs eat grass, and unfortunately most of them are ill-founded. For example, most people think dogs eat grass to intentionally make themselves sick. In most cases when a dog eats grass, however, the dog is not sick, nor does he have any underlying symptoms that may lead you to think he would want to be sick. Some dog owners will witness a specific correlation between eating grass and being sick but unfortunately there just is not enough evidence for this as a primary, common reason.

Studies have been carried out to try and link grass easting with illness, vitamin or mineral deficiencies and lack of roughage in the diet, none of which found any significant evidence. In some cases, you see dogs only eating grass from specific areas, suggesting these might just taste better or have higher mineral deposits. Other ideas include that these are areas where other dogs have scented, or other animals have urinated.

In most cases, routinely eating small amounts of grass will do no harm, and is perfectly normal. The dangers exist where this consumption is excessive. Apart from not being easily digestible, there is a danger where vomiting occurs that pieces of grass are deposited in the nasal cavity, which can lead to infection.

In your case, if this excessive consumption has occurred suddenly, check his stools and urine for any changes. Also monitor his behavior. If you don’t notice any other changes in his health or behavior, it is probably safe for you to wait and see if this is a temporary habit, or if it only happens in a specific place which you can avoid. However, if it continues, is affecting his consumption of his regular diet, or you notice any other minor health problems you should take him for a thorough medical examination.