Can dogs eat shiitake stems?

Skip them. The stem is much tougher and more fibrous than the cap, so it does not chew down well, can lodge on the way down, and often passes undigested. Trim the stems, cook the caps plain, and chop them into small pieces.

Are dried shiitake mushrooms okay?

Only after full rehydration. Soak them until completely soft, simmer them plain, chop small, and keep the portion tiny. Never offer a dry cap, which swells after swallowing and is a choking risk, and throw out the soaking liquid instead of pouring it on food.

My dog ate shiitake out of a stir-fry. Should I call the vet?

The mushroom is fine; the sauce is not. Stir-fried shiitake absorbs soy sauce, salt, garlic and often onion, and garlic damages canine red blood cells. Note the amount and time and call your vet or the APCC at (888) 426-4435, especially if the portion was more than a bite.

Shiitake

Safe

Shiitake is on the vet-reviewed list of grocery mushrooms safe for dogs. Trim the tough stems, cook it plain, chop it small, and skip both seasoned shiitake dishes and anything foraged.

This food guide has not been reviewed by a veterinarian. It summarises general information from sources and should not be used to decide whether a food is suitable for an individual dog or to assess an emergency.

A little guide to sharing this food

Nutrition facts

Per 100 g of edible food

56 kcal

Food preparation used in the calculationCultivated shiitake, cooked without salt

Protein: 1.6 g
Dietary fibre: 2.1 g
Fat: 0.2 g
Water: 83.5 g

USDA FoodData Central · SR Legacy ↗ · 2026-09-07

Nutritional points to consider

Dietary fibre

Complete, balanced food is the nutritional foundation. Treats are not needed to correct nutrients or treat disease.

Kidney health

Phosphorus 29 mg · Potassium 117 mg / 100 g

Kidney disease can require adjustments to phosphorus, potassium and protein across the whole diet. These values alone cannot determine suitability; discuss them with your vet alongside the prescribed diet.

Merck Veterinary Manual ↗

Heart health

Sodium 4 mg / 100 g

Heart disease may require control of total dietary sodium. Values here apply to the stated preparation, not salted, seasoned or processed alternatives.

Tufts HeartSmart ↗

Joints & weight

Include treats in total daily calories to maintain a healthy weight. A single food or fish is not equivalent to a therapeutic joint diet or a prescribed supplement dose.

UC Davis ↗

Treat portions by body weight

This converts a selected calorie budget into grams; it is not a recommended meal or an amount to aim for. Start with a small piece and monitor tolerance.

Food preparation used in the calculation: Cultivated shiitake, cooked without salt

Body weight (kg)Other treats eaten today (kcal)Calorie budget for this foodApplies to

Daily calories confirmed with your vet (optional)Overrides the body-weight table when entered.

Upper reference amount for the selected budget

25 g or less

Calories available for this food: 14 kcal

Based on the WSAVA treat-calorie table for healthy adult dogs weighing 2–45 kg. Intermediate weights are interpolated examples.

All extras, including fruit, chews and training rewards, must stay within 10% of daily calories. Subtract any other treats already eaten.

Examples: a 5% daily calorie budget, no other treats
Weight	Calorie-based reference ceiling
2 kg	12.5 g or less
5 kg	25 g or less
10 kg	41.9 g or less
20 kg	70.5 g or less

Preparation & feeding

Cook edible parts without salt until soft. Remove corn cobs and use only cultivated mushrooms sold as food.
Do not add salt, oil, sugar, sauces, onions or garlic. Weigh only the edible portion before serving.
Count all treats together and supervise eating. Start small and stop if vomiting, diarrhoea or other problems occur.

Nutrition & feeding references: WSAVA · USDA

Signs and health concerns

This list includes both observable signs and conditions identified through examination or testing. It cannot establish the cause or whether an exposure is safe.

Vomiting
Diarrhoea
Excess gas
Choking

More about this food

Shiitake is named directly on PetMD's vet-reviewed list of grocery-store mushrooms that are safe for dogs, alongside white button, cremini, portabella, porcini and maitake. As with any mushroom, dogs have no nutritional need for it, so this is a small extra for a dog that likes the taste rather than a supplement worth adding. Shiitake has one prep quirk worth knowing. The stem is markedly tougher and more fibrous than the cap. Handed over whole it does not chew down properly, and it either lodges on the way down or passes through undigested. Trim the stems off and use the caps. Wash them, cook them plain by blanching or dry-searing with no fat, and chop them small. Raw mushroom cell walls are hard for a dog to break down, so cooked is better. If you are using dried shiitake, rehydrate it fully until soft and then simmer it plain; discard the soaking liquid rather than pouring it over food, and never offer dried caps as-is, since they swell and are a choking risk. The failure point is almost always the dish. Shiitake is a stock-and-braise mushroom, so the shiitake a dog actually meets is inside a stir-fry, a ramen bowl, a teriyaki pan, a braise or a stuffing, cooked with soy sauce, sugar, salt, garlic and scallion. Garlic, onion and chives damage canine red blood cells, and a salty broth is its own burden. Picking the mushrooms out of a finished dish does not undo what soaked into them. Keep all treats within 10% of daily calories. Finally, the wild mushroom line. Shiitake being safe from a store says nothing about a mushroom growing on a log in the woods or on a stump in the yard. AKC calls wild mushroom poisoning an under-reported cause of fatal poisoning in dogs, and lookalikes are exactly why foraging by eye is risky even for experienced people. If your dog ate a wild mushroom, call your veterinarian, an emergency hospital, or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately, and bring a sample wrapped in a damp paper towel inside a paper bag. Do not induce vomiting at home. Plain cooked shiitake followed by gas or a soft stool just means a smaller portion next time.

Frequently asked questions

Can dogs eat shiitake stems?: Skip them. The stem is much tougher and more fibrous than the cap, so it does not chew down well, can lodge on the way down, and often passes undigested. Trim the stems, cook the caps plain, and chop them into small pieces.
Are dried shiitake mushrooms okay?: Only after full rehydration. Soak them until completely soft, simmer them plain, chop small, and keep the portion tiny. Never offer a dry cap, which swells after swallowing and is a choking risk, and throw out the soaking liquid instead of pouring it on food.
My dog ate shiitake out of a stir-fry. Should I call the vet?: The mushroom is fine; the sauce is not. Stir-fried shiitake absorbs soy sauce, salt, garlic and often onion, and garlic damages canine red blood cells. Note the amount and time and call your vet or the APCC at (888) 426-4435, especially if the portion was more than a bite.

This information is general guidance and does not replace veterinary care. If your dog has swallowed something, contact a veterinarian immediately.