Can Dogs Eat Tomatoes?

Can Dogs Eat Tomatoes?

Yes and no. Dogs can consume ripe tomatoes in small amounts as they are generally considered non-toxic. However, it's important to exercise caution due to the fact that unripe tomatoes and tomato plants contain toxins that can potentially harm dogs.

The toxins in question, solanine and tomatine, are naturally occurring chemical compounds found in tomatoes and other plants in the Solanaceae family, which includes tomatoes, potatoes, and eggplants. It is a type of glycoalkaloid, a class of compounds known for their potential toxicity. Tomatine is primarily concentrated in the green parts of the tomato plant, such as the leaves and stems, as well as in unripe (green) tomatoes. Therefore, it is essential to prevent your dog from ingesting the leaves, stems, or young, green tomatoes. Consumption of unripe (green) tomatoes or any green components of the tomato plant can lead to symptoms of tomatine poisoning.

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What are the symptoms of dogs eating unripe (green) tomatoes?

If a dog consumes unripe (green) tomatoes or any parts of the tomato plant that contain higher levels of tomatine, they may experience symptoms of tomatine poisoning:

  • Gastrointestinal Distress: Dogs may exhibit symptoms such as vomiting, diarrhoea, abdominal pain, and drooling.
  • Lethargy: A dog that has ingested unripe tomatoes or tomatine-containing plant parts may become lethargic or unusually tired.
  • Muscle Weakness: Some dogs may experience muscle weakness or tremors.
  • Dilated Pupils: Tomatine poisoning can lead to dilated pupils in affected dogs.
  • Increased Heart Rate: An elevated heart rate (tachycardia) may be observed.
  • Seizures: In severe cases of tomatine poisoning, dogs may experience seizures, which can be life-threatening.

It's important to note that the severity of symptoms can vary depending on factors such as the amount of tomatine ingested, the size and age of the dog, and their individual sensitivity to the toxin.

what side effects can green tomatoes have on dogs

How many unripe (green) tomatoes are toxic to dogs?

The specific quantity of green tomatoes that can be toxic to dogs can vary widely depending on factors such as the dog's size, weight, and overall health. The toxicity of unripe (green) tomatoes to dogs can vary depending on the size and sensitivity of the dog, as well as the amount of tomatine present in the particular tomatoes.

It's challenging to provide an exact number of green tomatoes that would be toxic to a dog, as it depends on various factors. However, as a general guideline, even a small amount of green tomato or its parts (leaves, stems) could potentially lead to mild to moderate gastrointestinal upset, including symptoms like vomiting and diarrhoea.

Will one green tomato harm my dog?

One green tomato is unlikely to cause severe harm to your dog, but it could potentially lead to mild gastrointestinal upset. Green tomatoes contain higher levels of tomatine, a compound that can be toxic to dogs when consumed in significant quantities. If your dog ingests a small amount of a green tomato or its parts (such as the stem or leaves), they may experience symptoms like vomiting, diarrhoea, or abdominal discomfort.

While a single green tomato is generally not considered a serious health threat, it's essential to monitor your dog for any adverse reactions and provide plenty of water to prevent dehydration if they experience vomiting or diarrhoea.

Can dogs safely eat ripe tomatoes?

Ripe, red tomatoes are generally considered safe for dogs to consume as an occasional treat. However, it's essential to feed them in small quantities and monitor your dog for any adverse reactions.

Ripe tomatoes are a source of vitamins and minerals like vitamin C and potassium, and they are relatively low in calories. Some dog owners offer small pieces of ripe tomato as a healthy treat. Just be sure to remove the green parts, such as the stem and leaves, as these can contain higher levels of tomatine, a compound that can be harmful to dogs in larger quantities.

While ripe tomatoes are safe for most dogs, some dogs may have sensitivities or allergies to tomatoes, so it's a good idea to introduce them slowly and watch for any signs of digestive upset or allergic reactions.

the differences between green and red tomatoes

Are cooked tomatoes safe for my dog?

Cooked tomatoes, such as those found in some sauces or dishes, are generally considered safe for dogs to consume in moderation.

If you're preparing cooked tomatoes for your dog, make sure they are plain and do not contain any added seasonings, spices, onions, garlic, or other ingredients that can be toxic to dogs.

What to do if your dog eats unripe (green) tomatoes?

If your dog has ingested unripe (green) tomatoes or any parts of the tomato plant that contain higher levels of tomatine, here are the steps you should take:

  1. Assess the Situation: Determine how much of the green tomato or plant material your dog has consumed and whether they are exhibiting any immediate symptoms.
  2. Contact Your Veterinarian: If you are unsure about the quantity consumed or if your dog is displaying symptoms of distress, contact your veterinarian immediately for guidance. They can provide specific advice based on your dog's size, age, and health status.
  3. Monitor Your Dog: Keep a close eye on your dog for any signs of tomatine poisoning, which may include vomiting, diarrhoea, drooling, lethargy, muscle weakness, dilated pupils, or, in severe cases, seizures. Note the time of ingestion and any changes in your dog's behaviour or condition.
  4. Do Not Induce Vomiting: Do not attempt to induce vomiting in your dog without consulting your veterinarian first. Some toxins can cause more harm if vomiting is induced.
  5. Offer Water: Provide clean, fresh water for your dog to drink. This can help prevent dehydration, especially if they are experiencing vomiting or diarrhoea.
  6. Follow Veterinary Advice: If your veterinarian advises you to seek immediate treatment, take your dog to the vet clinic as soon as possible. They may need to administer treatments such as activated charcoal to absorb toxins or provide supportive care to manage symptoms.

The key to a favourable prognosis is early intervention. Dogs that receive prompt treatment are less likely to experience severe symptoms or complications. However, if treatment is delayed or if a dog ingests a significant amount of tomatine, more serious symptoms such as seizures can occur, which can potentially have a less favourable outcome.

what to do if your dog eats green tomatoes

What Are Alternative Safe Natural Treats for Dogs?

Numerous dog-friendly alternatives to tomatoes are available, providing safe options for treating your dog. Opting for natural dog treats and chews that do not contain added preservatives or flavourings is an ideal choice.


Pizzles, (also known as bully sticks), are a natural dog treat packed with benefits. They're rich in protein, promote dental health by reducing plaque and tartar, offer a satisfying chew, and contain no artificial additives, making them a wholesome, long-lasting choice for your dog.

Furry Rabbit Ears

Rabbit ears with fur make an excellent natural dog treat. They are a natural source of lean protein, support dental health by reducing plaque and tartar buildup, and offer a satisfying chewing experience. Plus, the fur provides dietary fibre, aiding digestion.

With Wags and Woofs,

Laura, Dolly & Reggie

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