Can dogs eat tomatoes?
It depends. Ripe (red) tomatoes in small amounts are safe. However, green tomatoes and parts of the plant (leaves, stems) are toxic.
Ripe vs. green tomatoes
| Ripe tomato (red) | Green tomato | |
|---|---|---|
| Safe? | Yes, in moderation | No |
| Solanine | Very low level | High level (toxic) |
| Tomatine | Very low level | High level (toxic) |
What is solanine?
Tomatoes belong to the nightshade family (along with potatoes and eggplant). The green parts of the plant contain solanine and tomatine, substances toxic to dogs. As the tomato ripens and turns red, the concentration of these substances decreases dramatically.
Dangerous parts
Never offer:
- Green (unripe) tomatoes
- Tomato plant leaves
- Tomato plant stems
- Plant flowers
If you have tomato plants in your garden, restrict your dog’s access to the plant.
Benefits of ripe tomatoes
- Lycopene — antioxidant that may reduce heart disease risk
- Vitamin C — immune support
- Potassium — muscle health
- Fiber — aids digestion
- Vitamin K — blood clotting
How to serve ripe tomatoes
- Choose tomatoes that are fully red and ripe
- Wash thoroughly
- Remove the seeds (they can cause discomfort)
- Cut into small pieces
- Serve without salt or seasoning
Recommended portions
1-2 small pieces as an occasional treat. Tomatoes should not be a regular part of the diet.
Tomato products: safe or not?
| Product | Safe? | Why? |
|---|---|---|
| Fresh ripe tomato | Yes | Low solanine |
| Homemade tomato sauce (unseasoned) | In moderation | No additives |
| Ketchup | No | Sugar, salt, preservatives |
| Store-bought tomato sauce | No | Onion, garlic, salt, sugar |
| Tomato soup | No | Seasonings and additives |
| Sun-dried tomatoes | In moderation | Concentrated, may have salt |
Symptoms of solanine poisoning
If the dog eats green tomatoes or plant parts:
- Gastrointestinal issues (vomiting, diarrhea)
- Lethargy
- Weakness
- Confusion
- Altered heart rate
Seek veterinary care if you observe these symptoms.
This article is informational and does not replace a veterinary consultation.