Can dogs eat oats?
Last updated 2026-05-08 · Sourced from ASPCA & Merck Veterinary Manual
The short answer
Yes — dogs can safely eat oats. plain cooked Whole grain cereal, often eaten as porridge.
Why it's okay
High in fiber, helps with bowel regularity. Soluble fiber benefits older dogs.
How much oats can a dog eat?
Plain cooked oatmeal, cooled, no sugar/milk/cinnamon for some.
What every dog owner should know
- Plain only — no flavored instant packets
- Skip raisins (toxic)
- Cinnamon in small amount okay; nutmeg toxic
How much oats can dogs 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 dog's activity level and overall diet.
| Dog size | Recommended amount |
|---|---|
| Toy (under 10 lb) | 1 teaspoon-sized piece, 1-2× per week |
| Small (10-25 lb) | 1 tablespoon-sized piece, 2-3× per week |
| Medium (25-50 lb) | 2 tablespoons or 1 small slice, 2-3× per week |
| Large (50-90 lb) | 1/4 cup or 2 small slices, 3× per week |
| Giant (over 90 lb) | 1/3 cup or 3 small slices, 3× per week |
These are general guidelines — always consult your veterinarian for portion recommendations specific to your pet's health, weight, and existing diet.
Puppy safety
Oats is generally safe for healthy puppies once they're fully weaned (around 8 weeks). Start with very small amounts — about 1/4 of the adult portion — and watch for any digestive upset over 24 hours before offering more. Never replace dog food with treats; growing animals need their balanced nutrition first.
What to do if your dog ate oats
Oats is generally safe in moderation. If your dog 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 dogs
If your dog likes oats, they may also enjoy these safe options: