Can Dogs Eat Tomatoes?
Ripe red tomatoes are safe for dogs in small amounts and even appear in some pet foods. But the green parts - unripe tomatoes, plus the leaves and stems of the plant - contain solanine and tomatine, which are toxic to dogs. Serve only plain, ripe, red tomato in moderation, keep dogs away from tomato plants in the garden, and avoid tomato sauces and soups, which often contain garlic or onion.
It depends on which part and how ripe. Ripe, red tomatoes are safe for dogs in moderation - but green (unripe) tomatoes and the leaves and stems of the tomato plant are not. That distinction is the whole answer.
Ripe tomatoes: safe in moderation
Fully ripe, red tomato flesh is non-toxic and actually shows up as an ingredient in some dog foods. In small amounts it offers:
- Fibre to support digestion
- Antioxidants (including lycopene)
- Vitamins C and K, and potassium
Offer it plain, washed, and cut into pieces, as an occasional treat - not a big serving.
Green tomatoes and the plant: toxic
The green parts of the tomato plant contain solanine and tomatine, natural compounds that are toxic to dogs. That means you should keep your dog away from:
- Unripe (green) tomatoes
- Tomato leaves, stems and vines - a real risk if you grow tomatoes in the garden
As a tomato ripens, tomatine levels drop sharply, which is why ripe red fruit is fine while green fruit and foliage are not. Signs of tomatine poisoning can include stomach upset, drooling, weakness, wobbliness and an abnormal heart rate - call your vet if your dog eats green tomatoes or plant material.
Watch the tomato products
Even with ripe tomatoes, skip the processed stuff:
- Pasta sauce, ketchup, salsa and tomato soup usually contain garlic and onion, which are toxic to dogs, plus salt and sugar.
- Too much plain tomato can also upset the stomach because of its acidity.
The bottom line
A few pieces of plain, ripe, red tomato now and then are fine for most dogs. Keep the green parts, the plant, and seasoned tomato products off the menu. Introduce it in a small amount the first time and watch for any tummy upset, and check with your vet if your dog has a sensitive stomach.
References
- Can Dogs Eat Tomatoes? - American Kennel Club
- Can Dogs Eat Tomatoes? Benefits, Risks, and Feeding Tips - PetMD
- Can Dogs Eat Tomatoes? Are They Safe? - Hill’s Pet
This article is general information, not veterinary advice. Contact your vet if your dog eats green tomatoes or tomato-plant material.
