PupkeeperToxic
Is tomato plant toxic to dogs?
Toxic. Tomato leaves, stems and unripe green tomatoes can cause stomach upset, weakness and a slow heart rate; ripe tomatoes are non-toxic.
If your dog ate or touched this, call your vet or a pet poison line now
United States
Poison lines in other countries: United Kingdom, Australia, Canada, New Zealand
What to do now
- Call your vet or a pet poison line now.
- Take any plant pieces away and rinse your dog's mouth with water.
- Bring a piece of the plant in a bag, or a photo, to help identify it.
Don't
- Don't make your dog vomit unless a vet tells you to.
- Don't give milk, oil, salt or other home remedies unless a vet tells you to.
Signs to watch for
- Drooling
- Loss of appetite
- Severe stomach upset
- Low energy (depression)
- Weakness
- Dilated pupils
- Slow heart rate
Why
The green parts of the plant contain solanine and tomatine. Ripe red fruit is considered non-toxic.
Sources
- ASPCA Animal Poison Control: Tomato Plant
- ASPCA: Our Top Three Summer Garden Safety Tips
- Pet Poison Helpline: Toxic Plants to Pets (first aid)
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.