Can cats eat basil?
Last updated 2026-05-08 · Sourced from ASPCA & Merck Veterinary Manual
The short answer
Yes — cats can safely eat basil. Cats may nibble — fine. Sweet leafy herb.
Remember: cats are obligate carnivores. They derive almost all their nutrition from animal protein, so even "safe" plant foods are treats — not staples.
Why it's okay
Cats may nibble — fine.
How much basil can cats have?
Treats — including basil — should make up no more than 10% of daily calories. Use these portion sizes as a starting point and adjust for your cat's activity level and overall diet.
| Cat size | Recommended amount |
|---|---|
| Any cat (avg 8-12 lb) | 1 small piece (1/2 teaspoon equivalent), 1-2× per week max |
These are general guidelines — always consult your veterinarian for portion recommendations specific to your pet's health, weight, and existing diet.
Kitten safety
Basil is generally safe for healthy kittens once they're fully weaned (around 8 weeks). Start with very small amounts — about a pea-sized piece — and watch for any digestive upset over 24 hours before offering more. Never replace cat food with treats; growing animals need their balanced nutrition first.
What to do if your cat ate basil
Basil is generally safe in moderation. If your cat ate too much, you may see mild stomach upset (gas, soft stool) — usually resolves on its own within 24 hours. Contact your vet if you see vomiting, lethargy, or symptoms lasting more than a day.
See full emergency guideOther safe herbs & spices for cats
If your cat likes basil, they may also enjoy these safe options: