Can Dogs Eat Tomatoes?
Dogs can eat tomatoes, but with important precautions. Small amounts of the ripe, red flesh are generally considered safe for dogs as an occasional snack. According to the ASPCA, the ripe fruit itself is not toxic to dogs.
The primary concern involves the tomato plant, not the fruit. The green parts, including the stems, leaves, vines, and unripe green tomatoes, contain substances that are toxic to dogs. While a small piece of ripe tomato is usually fine, a dog with unsupervised access to a vegetable garden could be at risk of eating the unsafe parts of the plant.
Tomatoes and dogs: the facts in one table
| Verdict | Only plain, small amounts, with care |
|---|---|
| How to offer it |
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| Remove or avoid |
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| Main risks |
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| Signs to watch |
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Why tomatoes can be a risk for dogs
The main risk for dogs comes from the tomato plant itself, rather than the ripe fruit. The ASPCA lists the tomato plant as toxic to dogs because its green parts contain harmful compounds. This includes the leaves, stems, vines, and any unripe, green tomatoes. Ingesting these parts of the plant can cause a range of adverse reactions.
If a dog eats the green parts of a tomato plant, watch for the following signs listed by the ASPCA:
- Severe stomach upset
- Hypersalivation
- Loss of appetite
- Weakness
- Depression
- Dilated pupils
- A slow heart rate
These symptoms are a reaction to the toxic components in the plant. They are not associated with eating the plain, ripe red fruit.
How to share tomatoes safely
If you choose to offer your dog a piece of tomato, safe preparation is essential. Select only a plain, ripe, red tomato and wash it thoroughly. Remove the stem and any attached leaves completely. Cut the fruit into small, manageable pieces appropriate for your dog’s size to prevent any choking hazards.
As with any new food, introduce tomatoes slowly and in a very small amount to see how your dog’s system reacts. Tomatoes should only be an occasional snack, not a regular part of their diet. Supervise your dog while they are eating, and always read ingredient labels carefully on any human food you consider sharing.
What tomato products to avoid
Many human foods that contain tomatoes are not safe for dogs. Processed tomato products like sauces, soups, and salsas should be avoided. These items often contain ingredients that are harmful to dogs, such as onion and garlic, which are toxic. They can also have high levels of salt, sugar, or other seasonings that are not suitable for a dog’s diet.
The safest approach is to only offer plain, fresh, ripe tomato. Keep all seasoned tomato products out of your dog’s reach. If you have a vegetable garden, ensure it is secured so your dog cannot access the tomato plants and chew on the potentially toxic leaves, stems, or unripe fruit.
When to call your vet
Most dogs who eat a little plain tomatoes need nothing more than watching. Call your vet if anything below shows up, or if your dog has a health condition or is on a special diet.
Contact your veterinarian or a pet poison hotline, such as the ASPCA Animal Poison Control Center, if you suspect your dog has eaten any green parts of a tomato plant or shows signs of illness after eating any tomato product. Be prepared to tell them what your dog ate, how much you think they consumed, and when it happened. Keep any packaging from processed foods, as the ingredient list can be very helpful for a veterinary professional.
Emergency signs: go now
- Collapse, fainting or severe weakness
- Seizures, tremors or trouble standing
- Trouble breathing or blue, gray or very pale gums
- Repeated vomiting or retching, or a swollen, painful belly
- Any known contact with a substance listed as toxic, even before signs appear
Book an appointment soon
- Vomiting or diarrhea that lasts or keeps coming back
- Not eating or drinking, or drinking much more than usual
- Drooling, pawing at the mouth or a swollen face
- Lethargy, hiding or acting unlike themselves
ASPCA Animal Poison Control Center: (888) 426-4435 (a consultation fee may apply). Your own vet or nearest emergency clinic is always a good first call.
Sources
Last checked October 21, 2026. Listings and guidance can change; your veterinarian knows your pet’s health history.