Can Dogs Eat Caffeine (Coffee & Tea)?
4-minute read · Loyal Saints Food Safety Library
Quick answer
No — caffeine is toxic to dogs. Coffee, tea, energy drinks, and coffee grounds contain caffeine, which overstimulates a dog's nervous system and heart. Even small amounts can cause hyperactivity, rapid heart rate, tremors, and seizures. Keep all caffeine away from dogs and call your vet if ingested.
Caffeine is toxic to dogs — they're far more sensitive to it than humans. It's found in coffee, tea, energy drinks, soda, coffee beans and grounds, and some medications and supplements. Caffeine is a stimulant that overstimulates the canine nervous system and heart.
Even relatively small amounts can cause restlessness, hyperactivity, a racing or irregular heart rate, elevated blood pressure, tremors, and seizures. Coffee grounds and tea bags are especially concentrated and dangerous. Symptoms usually begin within 1–2 hours. If your dog ingests caffeine, contact your veterinarian or animal poison control immediately. Keep coffee, tea, and especially used grounds and beans well out of reach.
Why it's dangerous
Toxic effect
Overstimulates the nervous system and heart.
Sources
Coffee, tea, energy drinks, soda, beans, grounds, some meds.
Symptoms
Hyperactivity, racing heart, tremors, seizures.
If ingested
Call your vet or ASPCA Poison Control (888-426-4435) immediately.
This guide is general information, not veterinary advice. If your dog has eaten something potentially harmful, contact your veterinarian or the ASPCA Animal Poison Control Center (888-426-4435) right away.
Frequently Asked Questions
Is caffeine bad for dogs?
Yes — caffeine is toxic to dogs, which are much more sensitive to it than people. It overstimulates the heart and nervous system. Coffee, tea, energy drinks, and especially coffee grounds and beans should all be kept away from dogs.
How much caffeine is dangerous for a dog?
Dogs are sensitive enough that even moderate amounts relative to body weight can cause symptoms; concentrated sources like coffee grounds, beans, or caffeine pills are especially dangerous. Because of this sensitivity, any caffeine ingestion should be taken seriously.
What are symptoms of caffeine poisoning in dogs?
Within 1–2 hours: restlessness, hyperactivity, rapid or irregular heartbeat, elevated blood pressure, tremors, and in severe cases seizures. If you see these signs or know your dog ingested caffeine, contact your vet immediately.
My dog ate coffee grounds — what do I do?
Contact your veterinarian or the ASPCA Animal Poison Control Center (888-426-4435) right away. Coffee grounds and beans are concentrated sources of caffeine and especially dangerous. Prompt treatment improves the outcome.
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