Why
Some wild mushroom species are highly toxic. Washed, plain store-bought mushrooms are generally fine, but the AKC still advises against feeding them.
What to do instead
- Remove wild mushrooms from your yard.
Safer swaps from the same group: carrots, celery, cucumbers, green beans.
Watch out for
- If your dog eats a wild mushroom, call a vet or poison line right away and bring a sample if you can.
If your dog ate mushrooms
- Note how much your dog ate and when, and keep any packaging.
- Call your vet, an emergency clinic, ASPCA Animal Poison Control ((888) 426-4435) or the Pet Poison Helpline (855-764-7661).
- Don't make your dog vomit unless a vet tells you to.
Other vegetables: quick answers
| Food | Verdict | Short answer |
|---|---|---|
| Asparagus | Avoid | Not unsafe, but not worth it. Asparagus is tough raw and loses most of its value when cooked soft. |
| Tomatoes | Avoid | Best avoided. Ripe flesh is generally safe, but the green parts of the plant contain a toxin. |
| Broccoli | Small amounts | Yes, in small amounts. Cooked florets are easiest on the stomach. |
| Brussels sprouts | Small amounts | Yes, a few cooked sprouts. Expect gas. |
| Corn | Small amounts | Yes, off the cob. The cob can cause a dangerous blockage. |
| Peas | Small amounts | Yes, plain green peas in moderation. |
| Potatoes | Small amounts | Yes, plain and fully cooked, as an occasional extra. Never green or raw. |
| Spinach | Small amounts | A little is safe, but spinach is not a top choice for dogs. |
Rules for any new food
- Plain is the rule: no salt, butter, oil, onion, garlic, sugar or sweeteners. Most of the danger in human food comes from what is added to it.
- Keep all treats under 10% of your dog's daily calories (WSAVA). The rest should come from a complete dog food.
- Check labels for xylitol, raisins, chocolate and macadamia nuts, which turn up in baked goods, snacks and spreads.
- If your dog has a health condition, such as diabetes, pancreatitis or kidney disease, ask your vet before adding any new food.
Frequently asked questions
Are mushrooms safe for dogs?
Store-bought mushrooms are generally fine, but wild mushrooms can be deadly.
What should I do if my dog ate mushrooms?
Most dogs are fine after a small amount, but watch for vomiting, diarrhea or unusual behavior and call your vet if anything worries you.
Sources
Checked October 17, 2026. We are a reference, not a vet: if in doubt, call yours. How we check.