Can dogs eat zucchini?

Zucchini is one of the gentlest vegetables a dog can eat regularly. It's low in calories, high in water, and provides a modest amount of fiber and potassium. Here's how to serve it and what to watch for with older, overgrown squash.

Why it is fine

Zucchini doesn't contain anything toxic to dogs. It's mostly water, low in calories, with a modest amount of fiber, potassium, and vitamin C, which makes it a light treat even for dogs on a weight-loss diet.

The skin is edible and not a risk; on a young, smaller zucchini there's no need to peel it. Older, overgrown squash that's starting to dry out has more fiber and seeds and tends to be harder to digest, so it's better to choose smaller, younger zucchini.

The vegetable itself isn't the problem, it's the preparation typical of Mediterranean cooking. Zucchini fried in oil with garlic and salt, the way people often eat it, is hard on a dog's digestion because of the fat, salt, and garlic, not because of the zucchini itself.

Thanks to its high water content and low calorie count, zucchini can be given fairly often; moderation mainly matters because a large single portion can loosen the stool.

Zucchini also works as a partial substitute for kibble in dogs that need bulkier but low-calorie food, typically as part of a weight-loss diet under a vet's guidance. The seeds in a young zucchini are soft and harmless; in an overgrown one, it's better to scoop them out along with the watery core.

How to serve zucchini

• Raw, cut into thin slices or cubes; the skin is fine on younger, smaller zucchini.
• Cooked, steamed, or grilled with no salt, oil, or seasoning.
• Grated raw zucchini can be mixed into kibble or homemade food.
• Frozen cubes make a nice summer treat; for dogs that gulp their food, mash them first so they can't be swallowed whole.
• Never serve zucchini fried in oil with garlic or salt, the way it's prepared for people.

Risks

• Older, overgrown zucchini is fibrous and harder to digest.
• Zucchini fried in oil, with garlic, or with salt is unsuitable because of what's added, not the vegetable itself.
• A larger single portion can loosen the stool because of the high water content.

Symptoms to watch for

• Looser stools after a larger portion
• Bloating

Your dog already ate zucchini. What now?

1. A reasonable amount of plain zucchini doesn't call for any action.
2. After a larger single portion, watch the stool the next day; mild changes resolve on their own.
3. If your dog ate zucchini prepared with garlic or a lot of oil and salt, follow the guidance for that specific ingredient and contact your vet if you're concerned.