Coffee, Tea, and Energy Drinks: Caffeine Toxicity in Pets

Caffeine works similarly to theobromine (the chocolate compound) in terms of how it affects dogs and cats — it's a stimulant their bodies clear slowly, so it builds up rather than passing through. Used coffee grounds are actually more concentrated in caffeine than brewed coffee by volume, which surprises a lot of people cleaning up a knocked-over trash can. Tea bags, energy drinks, and some diet pills are other common sources.

Symptoms to watch for: restlessness, panting, an elevated heart rate, vomiting, and in more serious cases tremors or seizures. Onset is usually within an hour or two.

What to do right now: try to estimate the amount and source — a few dried coffee grounds licked off the floor is a different situation than a pet who got into a full bag of grounds or several tea bags. Getting an actual read on the quantity relative to your pet's size will tell you whether this needs monitoring or immediate attention.

When it's an emergency: any restlessness combined with an elevated heart rate or panting that doesn't settle, or any ingestion involving a concentrated source like coffee grounds or energy drink mix rather than a diluted beverage.

## Related Reading

• Alcohol Poisoning in Dogs and Cats Happens Faster Than You'd Think
• Are Pits and Seeds From Stone Fruit Dangerous for Dogs?
• Antifreeze Poisoning: Why Minutes Matter

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This is general information, not a substitute for an actual assessment of your specific pet, weight, and situation. If you're ever unsure whether something your pet ate needs immediate attention, a quick video vet consultation can tell you in minutes whether to monitor at home or head to a clinic.