Red: toxic
No, dogs must not drink coffee. Caffeine belongs to the methylxanthines, the same group of substances that makes chocolate toxic to dogs.
Why coffee is dangerous
According to the ASPCA, methylxanthines can cause vomiting, diarrhoea, panting, excessive thirst, increased urination, hyperactivity, abnormal heart rhythms, tremors, seizures and even death in pets. The more caffeine, the greater the risk. The MSD Veterinary Manual explains that caffeine stimulates the nervous system and speeds up the heart, and that dogs vary widely in their sensitivity. Pet Poison Helpline says dogs appear to be more sensitive to caffeine than humans.
Where caffeine is found
- Coffee beans, ground coffee and used grounds: According to Pet Poison Helpline, unused ground coffee and beans can cause severe poisoning. Coffee pads and capsules also contain ground coffee.
- Tea, cola and energy drinks: Tea bags and caffeinated supplements are also sources.
- Coffee drinks with cream: Sweet, creamy drinks are particularly tempting to dogs and often contain extra espresso shots.
- Chocolate-covered coffee beans: These combine caffeine with chocolate.
What if your dog has had coffee?
According to Pet Poison Helpline, one or two licks from a cup do not cause poisoning in most dogs. Keep an eye on your dog nevertheless. If your dog has eaten beans, ground coffee, used grounds or coffee pads, or consumed a whole drink, call your vet or an emergency veterinary service immediately. Be ready to explain what was eaten, roughly how much, when it happened and how much your dog weighs, and take the packaging. Do not induce vomiting yourself or give home remedies.
If you suspect poisoning, contact your vet or an emergency veterinary service immediately.
Our free feeding calculator shows you how much food your dog needs each day and how to account for snacks. You can find more on meal plans and treats in our book “Dog Nutrition and Meal Plans” (book in German), and our free Puppy Starter Pack helps you get ready for a puppy. To give your dog a place on your wall, explore our dog portraits from your own photo or choose an individual portrait.
Further reading
- Christmas with your dog: what to arrange in advance
- Puppy checklist: essentials and the first 3 days
- How to calculate how much food your dog really needs
Sources, accessed on 20.10.2026: ASPCA Animal Poison Control, People Foods to Avoid Feeding Your Pets (Chocolate, Coffee and Caffeine); MSD Veterinary Manual, Chocolate Toxicosis in Animals; Pet Poison Helpline, Caffeine.
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