Can cats eat oats?
Last updated 2026-05-08 · Sourced from ASPCA & Merck Veterinary Manual
The short answer
Yes — cats can safely eat oats. Plain, tiny amount Whole grain cereal, often eaten as porridge.
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
Non-toxic but cats don't need grains.
How much oats can a cat eat?
A spoonful occasionally.
What every cat owner should know
- Plain only
- Watch milk in oatmeal
How much oats can cats have?
Treats — including oats — 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
Oats 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 oats
Oats 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 grains for cats
If your cat likes oats, they may also enjoy these safe options: