Tomatoes are not poisonous to dogs when they are ripe and fed in small amounts. Ripe red tomatoes are generally considered safe and non-toxic to dogs and can be given as an occasional treat. However, the green parts of the tomato plant (leaves, stems) and unripe green tomatoes contain toxins called solanine and tomatine, which can be harmful and potentially poisonous to dogs. Ingesting these parts or unripe tomatoes can cause symptoms like vomiting, diarrhea, muscle weakness, tremors, and in severe cases, seizures. It is important to avoid feeding dogs the green parts of the plant and only offer ripe tomatoes in moderation to prevent poisoning. In summary:
- Ripe tomatoes: Safe in small amounts.
- Green tomatoes, leaves, stems: Toxic and should be avoided.
- Symptoms of poisoning: Gastrointestinal distress, lethargy, muscle weakness, seizures.
- Always remove green parts and monitor dogs when introducing tomatoes.
This information is supported by multiple expert sources including the American Kennel Club, PetMD, and Pet Poison Helpline.
