The 11 Health Benefits of Cat Grass 1. Aids in Digestion. 2. Helps Eliminate and Prevent Hairballs. 3. Provides Essential Nutrients. 4. Satisfies Natural Instincts. 5. Improves Oral Health. 6. Acts as a Natural Laxative. 7. Provides Stress Relief. 8. Provides Enrichment. 9. Prevents Ingestion of Other Plants. 10. Supports Immune System Health 11. Can Help With Weight Management