Can Cats Eat Cat Grass (Oat/Wheatgrass)?

Safe
Not needed in a cat's diet: a complete and balanced cat food provides what a cat needs (VCA).
Portion:Within the 10% treat limit (VCA); no per-food amount is published
Frequency:Occasional treat
Warning: ASPCA states that eating any plant material may cause vomiting and stomach upset in dogs and cats. No source we checked confirms a health benefit.
This is general information from the sources listed below, not veterinary advice. For your pet's diet, health conditions or any reaction after eating, contact a licensed veterinarian.

Why Safe?

ASPCA states that eating any plant material may cause vomiting and stomach upset in dogs and cats. We found no source in our checks confirming that cat grass helps hairballs or digestion.

How to Serve It Safely

Offer a small, dedicated pot of pet-safe grass rather than letting a cat browse houseplants or treated lawn grass, which may carry pesticides or be a toxic species.

Common Questions

Does cat grass help with hairballs?

We found no source confirming this. Frequent vomiting is a reason to contact a licensed veterinarian.

References

General public resources referenced while researching this tool's topic.

General educational guidance based on the references above, not veterinary advice. See our editorial policy for how we choose sources.

Important Safety Notice

Last updated: August 2026

This tool is intended for educational purposes only and should not be used as a substitute for emergency veterinary advice, diagnosis, or treatment.

If your pet may have consumed toxic foods, chocolate, medications, chemicals, or other dangerous substances, seek immediate help from a licensed veterinarian or emergency animal service in your area. Do not delay professional care based on calculator or search results alone.

Pet poison hotlines (24/7, US and Canada): ASPCA Animal Poison Control Center: (888) 426-4435  ·  Pet Poison Helpline: (855) 764-7661
Pet Poison Helpline states its service covers the U.S., Canada and the Caribbean. The ASPCA line is also used by Canadian pet owners. A consultation fee may apply to both. In Canada, your nearest 24-hour emergency vet clinic is the best first call; elsewhere, use local emergency veterinary directories.

How we calculate results: This tool uses commonly referenced veterinary toxicity thresholds and food safety guidelines. Actual toxicity can vary based on your pet's size, health status, and exact substance consumed. These results are estimates only and do not replace a veterinary assessment.