drink
Coffee
DANGEROUS
Coffee and caffeine are toxic to dogs. Even small amounts of coffee grounds, beans or strong coffee can cause serious poisoning.
If your dog has eaten this item, contact your vet or an emergency veterinary service now.
If your dog is showing symptoms such as difficulty breathing, seizures, collapse, severe vomiting, unconsciousness or other serious symptoms, seek emergency veterinary care immediately.
What to do
Contact your vet or an emergency veterinary service straight away and tell them how much coffee, and in what form, your dog may have had. Do not wait for symptoms and do not try to make your dog sick unless a vet tells you to.
When to contact a vet: Yes — coffee and caffeine ingestion needs prompt veterinary assessment, even if your dog seems well.
Symptoms to look for
- Restlessness or hyperactivity
- Panting
- Racing or irregular heartbeat
- Vomiting
- Tremors or muscle twitching
- Raised temperature
- Seizures
- Collapse
Why
Coffee contains caffeine, a methylxanthine closely related to the theobromine in chocolate. Dogs process methylxanthines far more slowly than people do, so caffeine builds up and overstimulates the heart and nervous system. Brewed coffee is a risk, but dry coffee grounds, beans and instant granules are far more concentrated and are the most dangerous forms — dogs that raid a bin or a bag of beans can take in a very large dose quickly. Caffeine tablets and energy drinks are more concentrated still. Signs usually begin within one to two hours. There is no safe amount of coffee for a dog, and decaffeinated coffee still contains some caffeine.
- Substances of concern
- Caffeine, Methylxanthines
- Preparation
- Never give coffee, coffee grounds, beans or coffee-flavoured drinks to a dog. Keep used grounds out of reach, including in compost and food waste caddies.
- How much matters
- Toxicity depends on your dog's weight and the strength and form of the coffee. Because grounds and beans are highly concentrated, treat any amount as potentially serious rather than trying to judge the dose yourself.
- Severity
- Can be severe, and severity rises quickly with the amount and concentration swallowed.
Sources
- ASPCA Animal Poison ControlPrimary authoritative — Toxicity
- Pet Poison HelplinePrimary authoritative — Toxicity
- PDSAVeterinary organisation — Toxicity
Information reviewed against recognised veterinary and animal-safety sources. Source organisations are independent of Is It For Dogs unless otherwise stated.
Last reviewed 6 September 2026 · next review due September 2027.
Safety classifications are based on available expert and veterinary information. Individual dogs may react differently, particularly dogs with allergies, existing health conditions or specific dietary requirements.
Important: Is It For Dogs provides general information about the safety of foods, plants, drinks, ingredients and other items around dogs. Our information is based on sources we consider reliable and is intended to help dog owners make informed decisions. It is not a substitute for advice from a qualified veterinary professional. Read more
Dogs can react differently depending on their size, age, health, allergies, medications, the amount consumed and other circumstances. An item classified as Safe is not necessarily suitable for every individual dog.
If your dog has eaten something potentially poisonous or dangerous, has eaten an unknown substance, or is showing concerning symptoms, contact your veterinarian or an emergency veterinary service immediately.
Do not induce vomiting or give your dog medication unless specifically instructed to do so by a veterinary professional.