Can Dogs Eat Tomatoes? A Complete Guide

Can Dogs Eat Tomatoes? A Complete Guide

Can Dogs Eat Tomatoes? A Complete Guide

Dr. Nenad Misura

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Tomatoes are a household favorite, being a core component in many of our dishes. Plus, they’re very healthy and good for our nutrition. But is it the same for our best friends? Can dogs eat tomatoes? 

A veterinarian is holding a dog on a metal table for a checkup.
A veterinarian is holding a dog on a metal table for a checkup.

In this guide, we’ll talk all about the main benefits and risks of tomatoes. We’ll also talk about how to correctly feed your dog some.

What Are the Benefits of Tomatoes for Dogs?

Tomatoes are highly nutritious for dogs, offering key benefits such as: 

Boosts Immunity

Tomatoes provide balanced amounts of lycopene and vitamins A and C, helping strengthen the immune system and reduce inflammation caused by free radicals. 

Improves Digestion

Fiber offers improved bowel movements for dogs, helping them pass stool and avoid constipation. This also helps with nutrient absorption, ensuring dogs get the nutrients they need from their meals. 

Supports Eye, Skin, and Coat Health

The beta-carotene and vitamin A content can improve a dog’s vision, skin health, and coat condition. Tomatoes also have lutein and zeaxanthin, which protect the eyes from excessive UV light, reducing the risk of retinal decline. 

Vitamin C also plays a crucial role in collagen production, which is necessary for healthy skin. 

Promotes Heart and Muscle Function

Due to the potassium, lycopene, and vitamin content, tomatoes regulate blood pressure, reduce the risk of cardiovascular disease, and aid in overall heart health. They also support and protect muscle function. 

Reduces the Risk of Cancer

Ripe tomatoes have significant amounts of lycopene, which can combat oxidative stress and neutralize free radicals. Doing so potentially reduces the risk of cancer. 

Low in Calories

Tomatoes are also low in calories, which means giving them as treats in the right amounts won’t significantly impact your dog’s diet.

Two veterinarians are examining a dog and talking to a pet owner about the benefits of tomatoes for dogs.

When Are Tomatoes Bad for Dogs?

Even if tomatoes are nutritious for dogs, there are instances when they aren’t.

Unripe Tomatoes

Ripe tomatoes are safe, while unripe ones are dangerous. Unripe tomatoes contain high levels of solanine and tomatine, which are natural plant pesticides. These chemicals can cause severe health issues, including seizures, gastrointestinal distress, tremors, and severe poisoning in dogs

The good thing is that as the tomatoes ripen, these chemicals significantly drop. 

Tomato Leaves and Stems

Like unripe tomatoes, the leaves and stems of tomatoes contain high concentrations of solanine and tomatine. They can cause similar symptoms, which is why it’s important to always remove them before feeding tomatoes to your dog. 

Overfeeding

Feeding too much can be bad for dogs, even if tomatoes are low in calories. The fruit is acidic, which means too much can lead to digestive upset, vomiting, diarrhea, and gas. It can also trigger acid reflux in dogs. 

Processed Tomatoes

Tomato products meant for humans, such as pizza and pasta sauces, canned tomatoes, and ketchup, are dangerous for dogs. This is because of the high sodium content, preservatives, and toxic ingredients such as onions and garlic. 

Eating these can lead to excessive thirst, dehydration, digestive issues, and even anemia.

Choking Hazard

When served in large pieces or as whole cherry tomatoes, they can be a choking hazard for dogs. This is dangerous and should always be avoided. 

Allergic Reactions

Some dogs may be allergic to tomatoes, but this is quite rare. Some can have mild sensitivities to them.

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Want to improve your dog's diet?

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Talk to our vets first.

How Many Tomatoes Can Dogs Eat?

If you’re planning on giving your dog some tomatoes, here’s a quick guide on how much they can eat. 

Size of Dog

Amount of Tomatoes

Small (Less than 10 kg)

1-2 small pieces

Medium (11 to 25 kg)

2-3 small pieces

Large (26 to 45 kg)

3-4 small pieces

Giant (More than 45 kg)

4-5 small pieces

An infographic showing how many tomatoes are safe for dogs.

How to Prepare Tomatoes for Dogs?

Serving tomatoes should be done correctly to keep them nutritionally sound for your dogs. Here are a few tips: 

  1. Remove All the Green Parts

Always choose ripe tomatoes for the treat. Remove the green parts, as they are dangerous and should not be eaten.

  1. Wash Thoroughly

Wash the tomatoes properly to remove pesticide residue and dirt. This avoids any unnecessary problems after feeding. 

  1. Slice and Remove the Seeds

Slice the ripe tomatoes into small pieces and remember to remove the seeds. While they aren’t dangerous, they may cause mild digestive upset in some dogs. 

  1. Serve Plain and Slowly

Give one piece of tomato at a time. Don’t overfeed your dog and stick to the guide to know how much to give. 

“Tomatoes are one of the many ways we can spicen up our dogs’ treats. Let’s do it the right way.”

- Dr. Nenad Misura

Final Thoughts

Dogs can eat tomatoes, and they can have them as long as they are ripe and given in moderation. Tomatoes offer dogs many benefits, including vitamins A and C, fiber, lycopene, lutein, and zeaxanthin. Just remember to prepare them the right way.

Frequently Asked Questions

Can dogs eat cooked tomatoes?

Yes, they can. However, the tomatoes should be ripe and cooked plain, without any salt, garlic, onions, oil, or other additives.

Is tomato juice good for dogs?

Store-bought tomato juice is bad for dogs due to the high sugar and additives. Anything that is processed for human consumption is generally bad for dogs.

Can dogs eat the seeds?

Dogs can safely eat the tomato seeds, but it’s recommended to remove them when serving to avoid any potential digestive upset.

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