How much chocolate is toxic to dogs?

Toxicity depends on type and amount. Dark chocolate and baking cocoa carry the highest risk. Use our chocolate toxicity calculator for a rough estimate, then phone your vet regardless.

What should I do if my dog ate chocolate?

Phone your vet or Animal PoisonLine on 01202 509000 with your dog's weight, the type of chocolate, and amount eaten. Do not wait for symptoms.

What are symptoms of chocolate poisoning?

Vomiting, restlessness, increased thirst, rapid breathing, tremors, and seizures. Severe cases can be fatal. Early treatment significantly improves outcomes.

Dog Health

Can Dogs Eat Chocolate UK?

Quick answer

**No — dogs must not eat chocolate.** It contains **[theobromine](/glossary/theobromine)**, which dogs metabolise slowly. Dark chocolate and cocoa powder are most dangerous. If your dog ate chocolate, use our **[chocolate toxicity calculator](/chocolate-toxicity-calculator)**, then phone your vet or **Animal PoisonLine on 01202 509000** — do not wait for symptoms.

Key takeaways

No. Chocolate contains theobromine and caffeine, which dogs cannot metabolise safely. Dark chocolate and cocoa powder are most dangerous; even milk chocolate can harm smaller dogs.
Toxicity depends on type and amount. Dark chocolate and baking cocoa carry the highest risk. Use our chocolate toxicity calculator for a rough estimate, then phone your vet regardless.
Phone your vet or Animal PoisonLine on 01202 509000 with your dog's weight, the type of chocolate, and amount eaten. Do not wait for symptoms.

The full picture

Causes, home monitoring, treatment options and the exact signs that mean call your vet — in the complete guide.

Read the full guide Check symptoms

Frequently Asked Questions

Can dogs eat chocolate?: No. Chocolate contains theobromine and caffeine, which dogs cannot metabolise safely. Dark chocolate and cocoa powder are most dangerous; even milk chocolate can harm smaller dogs.
How much chocolate is toxic to dogs?: Toxicity depends on type and amount. Dark chocolate and baking cocoa carry the highest risk. Use our chocolate toxicity calculator for a rough estimate, then phone your vet regardless.
What should I do if my dog ate chocolate?: Phone your vet or Animal PoisonLine on 01202 509000 with your dog's weight, the type of chocolate, and amount eaten. Do not wait for symptoms.
What are symptoms of chocolate poisoning?: Vomiting, restlessness, increased thirst, rapid breathing, tremors, and seizures. Severe cases can be fatal. Early treatment significantly improves outcomes.

Reviewed 2026-07-19 against UK veterinary guidance · Information only — not a substitute for seeing your vet.