Can Dogs Eat Tomatoes? A Vet-Backed Guide

Tomatoes are healthy and full of antioxidants — but are they safe for dogs? Learn when they’re good, when they’re not, and how to serve them safely.

Nutrition

5 mins

02 Dec 25

Are Tomatoes Good for Dogs? Are Tomatoes Safe for Dogs? Can Dogs Eat Raw, Cooked, or Canned Tomatoes? How Much Tomato Can a Dog Eat? Can Puppies Eat Tomatoes? Can Dogs Eat Cherry or Sun-Dried Tomatoes? FAQs Conclusion

Are Tomatoes Good for Dogs?

Ripe tomatoes can be a healthy, low-calorie treat for dogs when served correctly. They contain vitamin C, potassium, and lycopene, which can support immunity, heart health, and overall wellness. However, only ripe, red tomatoes are safe — the green parts of the plant can be toxic.

Nutritional Benefits of Tomatoes for Dogs

Vitamin C: Strengthens the immune system and helps reduce inflammation.
Potassium: Maintains healthy heart and muscle function.
Lycopene: A natural antioxidant that supports skin and eye health.
Fibre: Aids digestion and helps maintain regular bowel movements.
Low calories: A better alternative to processed treats.

Are Tomatoes Good for Dogs’ Skin and Coat?

Yes — lycopene and beta-carotene found in tomatoes can contribute to a shiny coat and healthy skin. These antioxidants also protect against environmental damage and aging.

Is Tomato Good for a Dog’s Immune System?

Yes, in moderation. Vitamin C and other antioxidants in tomatoes support cellular repair and immune strength. Just make sure to feed ripe, red tomatoes only to avoid toxic solanine.

Dog sniffing ripe red tomatoes growing in a garden.

Ripe tomatoes are safe in small amounts, but keep dogs away from the plants.

Are Tomatoes Safe for Dogs?

Ripe tomatoes are safe for most dogs, but unripe (green) tomatoes, stems, and leaves are not. They contain solanine, a compound that can cause stomach upset or poisoning in large amounts.

Are Ripe Tomatoes Safe for Dogs?

Yes — once fully red and ripe, tomatoes contain only trace solanine levels, which are harmless in small servings.

Why Can’t Dogs Eat Green Tomatoes or Stems?

Green tomatoes and their stems have higher solanine and tomatine, both of which are toxic to dogs. Ingesting large amounts may cause lethargy, drooling, or tremors.

What Is Solanine and Why It’s Risky for Dogs

Solanine is a natural defense compound found in nightshade plants (like tomatoes, potatoes, and peppers). While tiny traces are fine, unripe tomatoes can trigger nausea, vomiting, or confusion.

Golden retriever sitting beside tomato plants and a basket of tomatoes.

Keep dogs away from green tomatoes, stems and leaves as these parts can be toxic.

Can Dogs Eat Raw, Cooked, or Canned Tomatoes?

Can Dogs Eat Raw Tomatoes?

Yes — if they’re ripe and free from stems and leaves. Always wash them thoroughly to remove pesticide residue.

Are Cooked Tomatoes Safe for Dogs?

Yes — cooked tomatoes are safe as long as they’re plain (no salt, garlic, or onion). Cooking even reduces solanine slightly.

Can Dogs Eat Tomato Sauce or Ketchup?

No — store-bought tomato sauces, soups, and ketchups contain added salt, sugar, and spices that can be harmful. Homemade, salt-free tomato puree is fine in moderation.

Dog sitting near a bowl of plain tomatoes.

Serve washed, plain tomato pieces with stems and leaves removed.

How Much Tomato Can a Dog Eat?

Small amounts go a long way. Tomatoes should make up less than 10% of daily calories and always be treated as a snack, not a meal.

Small dogs: 1–2 small wedges (10–20 g)
Medium dogs: 2–3 wedges (30–50 g)
Large dogs: Up to half a small tomato (70–100 g)

Recommended Portion by Dog Size

Offer a few pieces, then wait to observe for any reaction. If your dog tolerates tomatoes well, you can repeat once or twice a week.

What If My Dog Eats Too Many Tomatoes?

Eating too many tomatoes might cause diarrhoea, stomach upset, or mild poisoning if they were unripe. Provide water and monitor for symptoms like drooling or lethargy — call your vet if needed.

Signs of Tomato Poisoning in Dogs

Excessive drooling
Tremors or muscle weakness
Slow heartbeat
Vomiting or diarrhoea
Confusion or lack of coordination

Veterinarian examining a dog on the consult table.

Contact your vet if your dog eats green tomatoes and shows poisoning signs.

Can Puppies Eat Tomatoes?

Puppies can try small amounts of ripe, red tomatoes once they’re at least eight weeks old. Their digestive systems are still developing, so introduce gradually.

Are Tomatoes Safe for Puppies to Try?

Yes, but only ripe tomatoes in tiny, bite-sized portions. Never offer tomato stems or leaves.

How to Introduce Tomatoes Safely to Puppies

Mash a few pieces and mix them with their usual food. Start with a fingertip-sized portion, then wait 24 hours to ensure no upset stomach.

Puppy reaching for a small piece of ripe tomato from a spoon.

Puppies should only try tiny tomato pieces once they’re at least eight weeks old.

Can Dogs Eat Cherry or Sun-Dried Tomatoes?

Are Cherry Tomatoes Safe for Dogs?

Yes — cherry tomatoes are fine as long as they’re ripe and plain. They’re small, easy to serve, and low in calories.

Are Sun-Dried Tomatoes Safe or Toxic?

Avoid commercial sun-dried tomatoes. They often contain salt, garlic, or herbs that can harm dogs. Homemade, unsalted versions are safe in moderation.

Small dog with a red tie sitting behind a tray of cherry tomatoes.

Cherry tomatoes must be ripe and plain, with no added salt, oil or herbs.

FAQs

Are Tomatoes Poisonous to Dogs?

Only unripe (green) tomatoes, stems, and leaves are toxic due to solanine. Ripe tomatoes are safe in small quantities.

Can French Bulldogs Eat Tomatoes?

Yes — but avoid large pieces to prevent choking and always ensure they’re fully ripe.

Are Tomatoes Safe for Diabetic Dogs?

Yes, ripe tomatoes are low in sugar and can be a good occasional treat. Avoid sauces with added sugars.

Can Dogs Eat Tomato Plants?

No — the leaves, stems, and green fruit are toxic. Keep tomato plants fenced off in gardens.

Can Dogs Eat Tomato Soup or Pasta Sauce?

Avoid it. Most recipes include onions, garlic, salt, or sugar — all harmful for dogs.

Small dog reaching toward ripe and unripe tomatoes on the plant.

Keep dogs away from tomato plants since leaves, stems and green fruit are toxic.

Conclusion

Tomatoes can be a safe, healthy snack when served ripe, washed, and plain. They’re full of antioxidants and vitamins that benefit your dog’s immune system, skin, and heart.

Just remember — green tomatoes, leaves, and sauces are off-limits.

At Tuggs, we believe real food is the foundation of a longer, healthier life.

Our fresh meat, vegetables, and sustainable insect protein are carefully balanced to give your dog the nutrients they need every single day.

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Written and reviewed by Lucy, Head of Recipe Innovation at Tuggs.

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