Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My dog ate Tomato - what should I do?
Solanum lycopersicum
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
Vomiting, diarrhea, abdominal pain, drowsiness, and in severe cases, changes in heart rate or coordination.
Escalation note
The foliage and stems contain solanine which is toxic to dogs; consult a veterinarian immediately if ingestion occurs.
What to watch for
Most dogs show mild GI signs: vomiting, diarrhea, drooling, and decreased appetite. Larger ingestions can cause weakness, tremors, loss of coordination, and changes in heart rate. Most cases stay in the mild range; persistent or escalating signs are the worry.
Time window
The cited sources do not pin down exact onset; mild GI signs typically appear within a few hours of ingestion, with most cases resolving within 24 hours. Larger exposures with neurological signs may take longer.
When to call the vet
Call your vet if vomiting or diarrhea continues for more than a few hours, if your dog seems weak or unsteady on its feet, or if you see any tremors or fast/slow heart rate. For a small dog that ate a lot of greens or stems, call now rather than waiting for symptoms. Pet Poison Helpline: (855) 764-7661; ASPCA Poison Control: (888) 426-4435.
What this means for your dog
Tomato plants are toxic to dogs because the green leaves, stems, vines, and unripe fruit contain solanine and tomatine. Pet Poison Helpline notes that solanine toxicity is uncommon in dogs and usually requires a sizeable ingestion of green plant material — ripe red tomatoes are safe — so a stolen cherry tomato is rarely cause for panic, but a chewed-up vine is.
Sources: ASPCA, Pet Poison Helpline (no first-aid guidance).
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.