Why Do Cats Eat Grass?

6. The Dangers of Eating Grass

Luckily, most of the time it is perfectly safe for your cat to eat grass. If your cat does it excessively, it may cause internal damage due to acid reflux or other digestive issues, but that is rare.

In most cases, the big concern is whether the plant itself is safe for cats. Most species of grass are fine, though grass that has been treated with pesticides or herbicides may be toxic. In addition, sometimes a blade of grass can get stuck in a cat's throat or nasal passage and cause irritation.