Can dogs eat tomatoes?
Last updated 2026-05-08 · Sourced from ASPCA & Merck Veterinary Manual
The short answer
Sometimes — with caution — dogs should only have small amounts of tomatoes. Ripe red fruit only — no leaves/stems Red fruit-vegetable used worldwide in cooking.
Why be careful
Ripe tomatoes are safe in small amounts. Green parts and leaves contain solanine, which IS toxic.
Symptoms to watch for
From solanine: GI upset, lethargy, weakness, dilated pupils, slow heart rate.
What every dog owner should know
- No tomato plants in dog-accessible gardens
- Avoid tomato sauce — contains onion/garlic
- Cherry tomatoes okay in moderation
What to do if your dog ate tomatoes
- Stay calm and assess how much was eaten and when.
- Call your vet or ASPCA Animal Poison Control at 888-426-4435 (consultation fee may apply).
- Alternatively, Pet Poison Helpline: 855-764-7661.
- Do not induce vomiting unless explicitly instructed by a vet.
- Have product packaging or the food itself ready to describe to the vet.
Puppy safety
Generally avoid feeding tomatoes to puppies. Their digestive systems are still developing and they're more sensitive to changes in diet, fat, sodium, and lactose than adults. If you've already given some, watch for vomiting, diarrhea, or lethargy and contact your vet if any appear.
What to do if your dog ate tomatoes
- Note how much was eaten and when. A small amount is rarely an emergency, but a large quantity may need vet attention.
- Watch for symptoms over the next 12–24 hours: vomiting, diarrhea, lethargy, loss of appetite, or changes in drinking/urination.
- Provide fresh water and skip the next meal if your pet seems unsettled — let their stomach calm down.
- Call your vet if symptoms appear or persist beyond 24 hours, or if the amount eaten was significant.
Better alternatives
If your dog likes tomatoes, they may also enjoy these safe options: