⚠️ Quick Answer: RIPE red tomatoes are safe — GREEN parts are toxic.
The red flesh is fine in moderation. But green tomatoes, stems, leaves, and vines contain solanine and tomatine, which are poisonous to dogs.
- Key Facts
- Tomato Parts Safety Guide
- Solanine & Tomatine Poisoning
- •Symptoms
- Portion Guide
- What to Avoid
- Frequently Asked Questions
- •Can dogs eat cherry tomatoes?
- •Are tomato plants poisonous to dogs?
- •Can dogs eat cooked tomatoes?
- •My dog ate a green tomato — should I worry?
- More Food Safety Guides
- • 📚 Related Reading
Key Facts
| Question | Answer |
|---|---|
| Ripe red tomato? | ✅ Safe in moderation |
| Green/unripe tomato? | ❌ Toxic — contains solanine |
| Stems, leaves, vines? | ❌ Toxic — high solanine levels |
| Cherry tomatoes? | ✅ Safe if ripe and red |
| Tomato sauce/ketchup? | ❌ Avoid — garlic, onion, salt, sugar |
Tomato Parts Safety Guide
| Part | Safe? | Why |
|---|---|---|
| Red flesh (ripe) | ✅ Yes | Solanine drops to safe levels when fully ripe |
| Seeds | ✅ Yes | Non-toxic in tomatoes (unlike apple seeds) |
| Green/unripe tomato | ❌ No | High solanine and tomatine — toxic |
| Stems | ❌ No | Concentrated solanine |
| Leaves | ❌ No | Concentrated solanine |
| Vines/plant | ❌ No | Concentrated solanine |
Solanine & Tomatine Poisoning
Tomatoes belong to the nightshade family. Green parts contain solanine and tomatine — glycoalkaloid compounds that are toxic to dogs when ingested in significant quantities.
Symptoms
- Vomiting and diarrhoea
- Lethargy and weakness
- Loss of coordination
- Muscle tremors
- Abnormal heart rate
- Seizures (in severe cases)
Garden warning: If you grow tomatoes, fence off the plants. Dogs may nibble on leaves and green fruit.
Portion Guide
| Dog Size | Ripe Tomato Portion | Frequency |
|---|---|---|
| Small (under 10 kg) | ½ cherry tomato or 1 tsp chopped | 1–2 times per week |
| Medium (10–25 kg) | 1 cherry tomato or ½ medium tomato | 1–2 times per week |
| Large (over 25 kg) | 2 cherry tomatoes or 1 medium tomato | 1–2 times per week |
What to Avoid
- ❌ Tomato sauce/passata — often contains garlic, onion (toxic to dogs), salt, sugar
- ❌ Ketchup — high sugar, vinegar, preservatives
- ❌ Tomato soup — cream, seasonings, toxic ingredients
- ❌ Sun-dried tomatoes — concentrated, may contain garlic/oil
- ❌ Pizza/pasta sauce — onion, garlic, herbs toxic to dogs
Frequently Asked Questions
Can dogs eat cherry tomatoes?
Yes — as long as they’re fully ripe and red. Wash well, remove any stem, and cut in half for small dogs to prevent choking.
Are tomato plants poisonous to dogs?
Yes. The leaves, stems, and vines contain solanine which is toxic. Fence off tomato plants in your garden.
Can dogs eat cooked tomatoes?
Plain cooked ripe tomatoes are fine. But avoid tomato sauces — they typically contain garlic, onion, and salt which are harmful.
My dog ate a green tomato — should I worry?
Monitor for vomiting, diarrhoea, or lethargy. One small piece is unlikely to cause severe problems, but contact your vet if symptoms appear or if your dog ate a large quantity.
⚕️ Medical Disclaimer: This article is for informational purposes only. Contact your vet if your dog eats green tomatoes or tomato plant parts.
