Every dog is different. Individual allergies and sensitivities are common — always introduce new foods in small amounts and watch for adverse reactions. This site is for informational purposes only and is not veterinary advice. Always consult your vet.
The Full Picture
Coffee, tea, energy drinks, and other caffeinated products are toxic to dogs. Caffeine is a methylxanthine (similar to theobromine in chocolate) that affects the heart, central nervous system, and muscles. Symptoms include restlessness, rapid breathing, heart palpitations, muscle tremors, seizures, and in severe cases, death. Coffee grounds and beans are more concentrated and more dangerous than brewed coffee. Even small amounts can be harmful depending on the dog's size. Contact your vet immediately if your dog ingests caffeine.
What You Should Know
Coffee should be kept well away from dogs. If your dog has drunk coffee, watch for symptoms such as vomiting, diarrhea, lethargy, or loss of appetite. In an emergency, contact your veterinarian or an animal poison helpline straight away.