What Foods Are Toxic to Dogs? A UK Safety Guide

Several common foods are genuinely dangerous for dogs — including chocolate, grapes and raisins, onions and garlic, and the sweetener xylitol. Keep these well out of reach, and call your vet straight away if your dog eats any.

Last updated: 9 June 2026 · PetsRus Team

Foods to keep away from dogs

• Chocolate — contains theobromine, toxic to dogs.
• Grapes & raisins — can cause kidney failure, even in small amounts.
• Onions, garlic, leeks & chives — damage red blood cells.
• Xylitol — a sweetener in some gums, sweets and peanut butters; very dangerous.
• Macadamia nuts, alcohol and caffeine — all toxic.

If your dog eats something toxic

Don't wait for symptoms. Call your vet or an animal poison line immediately with the food, amount and time eaten. Quick action makes a real difference.

Frequently asked questions

Is a tiny bit of chocolate okay?

Risk depends on the type and your dog's size — dark chocolate is worst. Always check with your vet rather than guessing.

Can dogs eat human treats safely?

Stick to dog-safe treats. Many human foods are fine, but the list above is never worth the risk.