Why Do Cats Vomit After Eating Grass. A widely-believed but not 100 accurate explanation for why cats eat grass is that it helps them vomit if they got sick or poisoned. It relieves an upset stomach.
Not only is there no evidence to suggest that grass will harm your cat but many experts theorize munching on those long green blades can be beneficial for your cat. All cats big and small eat a certain amount of grass to clear their gut of inedible material like hair and bones from eating and cleaning through vomiting. This shows that nearly all cats eat grass and are typically A-OK when doing so.
If you suspect your cat is eating too fast and regurgitating take these steps to reduce the risk.
However grass is not generally dangerous to cats. This excess hair is entering their system. Gastritis in cats characterized by an inflammation of the gastric mucosa can occur in cats of all ages. If your cat eats grass obsessively it can lead to excessive vomiting and may indicate that your cat is dealing with significant anxiety.
