Can Dogs Eat Tomatoes? The Complete Safety Guide
This article has been reviewed for accuracy by a licensed veterinary professional.
Ripe tomatoes are generally safe for dogs, but green tomatoes and tomato plants are toxic. Learn which parts are safe, proper portions, and warning signs to watch for.
The Quick Answer: Ripe Tomatoes = Yes, Green Parts = No
The answer to "can dogs eat tomatoes?" is yes and no. Here's the important distinction:
✅ SAFE
- Ripe, red tomatoes
- The flesh of the tomato
- Cooked tomatoes (plain)
🚫 TOXIC
- Green, unripe tomatoes
- Stems and leaves
- Tomato plants
The toxic parts contain a substance called solanine, which can be harmful to dogs. As tomatoes ripen and turn red, the solanine levels drop to safe amounts.
Understanding Safe vs Toxic Parts
Tomatoes belong to the nightshade family. The green parts contain glycoalkaloids, including solanine and tomatine.
🍅 Key Rule
If it's red and ripe, it's generally safe. If it's green or part of the plant, keep it away from your dog.
Nutritional Benefits of Ripe Tomatoes
| Nutrient | Benefit for Dogs |
|---|---|
| Lycopene | Powerful antioxidant that may reduce cancer risk |
| Vitamin C | Immune support and anti-inflammatory properties |
| Potassium | Supports muscle and nerve function |
| Fiber | Promotes healthy digestion |
How Much Tomato Can Dogs Eat?
| Dog Size | Safe Portion | Frequency |
|---|---|---|
| Small Dogs | 1-2 cherry tomatoes | 1-2x per week |
| Medium Dogs | 2-3 cherry tomatoes | 2-3x per week |
| Large Dogs | 1/4 medium tomato | 2-3x per week |
Solanine Toxicity: What to Watch For
⚠️ Signs of Solanine Poisoning:
- Gastrointestinal upset (vomiting, diarrhea)
- Lethargy and weakness
- Confusion or disorientation
- Drooling
- Slow heart rate (severe cases)
Frequently Asked Questions
Can dogs eat tomato sauce?
No. Most tomato sauces contain onion, garlic, salt, and sugar—all problematic for dogs. Stick to plain, ripe tomatoes only.
Are cherry tomatoes safer than regular tomatoes?
All ripe red tomatoes are equally safe. Cherry tomatoes are convenient because they're already portion-sized.
🍅 Curious About Other Foods?
Check our comprehensive food safety database for dogs!
Check Food Safety →Last Updated: December 5, 2025 | Reviewed by the PawPulse Veterinary Editorial Team
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