Some dogs eat grass because they are not getting enough nutrients in their diet. Grass contains vitamins, minerals, and fiber that can be beneficial for dogs.
Dogs sometimes eat grass to induce vomiting. This can be a way for them to get rid of toxins or other unpleasant substances that they have eaten.
Some dogs eat grass out of boredom or anxiety. If your dog is not getting enough exercise or attention, they may be chewing on grass to relieve their boredom or anxiety.
Some experts believe that dogs eat grass because it is a natural instinct for them.
Some dogs eat grass to get rid of parasites, such as worms. The grass can help to dislodge the parasites from the dog's stomach and intestines.
Sometimes, dogs eat grass simply because it's a habit. If your dog has been eating grass for a long time, they may just be used to doing it.
If your dog is eating an excessive amount of grass, or if they are also vomiting, losing weight, or having other health problems, you should see a veterinarian.