No. It’s not a good idea for your dog to eat tomatoes. They belong to the nightshade family, which means they contain a substance called tomatine in the stem and leaves. Tomatine is dangerous for dogs in large amounts. Tomatine is most prevalent in the stem and leaves, and in the green fruit, rather than in a ripe tomato itself, so snacking on a fresh red tomato isn’t going to hurt your dog.
However, it’s best to avoid feeding tomatoes to your dog, just to be safe. Dog owners with vegetable gardens should make sure their dogs stay away from tomato plants, too.
Symptoms to Watch Out For
Dogs that have consumed too much tomatine might show the following symptoms:
- Cardiac effects
- Upset stomach
- Loss of coordination
- Muscle weakness
Fortunately, this kind of reaction is rare. When in doubt, be sure to call your veterinarian if your dog has eaten green tomatoes or tomato leaves or stems.
For More Information
We offer a collection of articles on foods that are healthy or dangerous for dogs to eat, covering everything from grains, fruits, and vegetables. You might also be interested in reading “Can My Dog Eat Potatoes?”
The information provided in this article is not a substitute for professional veterinary help.