Can Dogs Drink Green Tea

The Short Answer: No — Green Tea Contains Caffeine and Is Not Safe for Dogs

Green tea is not safe for dogs. Despite its reputation as a healthy beverage for humans, green tea contains caffeine — a compound that is toxic to dogs. Green tea also contains theobromine in small amounts (the same toxin found in chocolate) and tannins that can irritate the digestive system. While green tea has lower caffeine than black tea or coffee, it is still sufficient to cause toxicity in small dogs or if consumed in significant amounts.

Why Green Tea Is Not Safe for Dogs

1. Caffeine Toxicity

Green tea contains approximately 20–45 mg of caffeine per 8 oz cup. Dogs metabolize caffeine far more slowly than humans, allowing it to accumulate to toxic levels. Caffeine causes restlessness, rapid heart rate, muscle tremors, and seizures in dogs. Small dogs are particularly vulnerable — even a small amount of green tea can cause noticeable symptoms.

2. Theobromine

Green tea contains small amounts of theobromine — the same compound that makes chocolate toxic to dogs. While the amount is much lower than in chocolate, it compounds the caffeine toxicity.

3. Tannins — Digestive Irritant

Green tea is rich in tannins, which can irritate the digestive system and interfere with iron absorption. Tannins cause nausea, vomiting, and digestive upset in dogs.

4. Matcha — More Dangerous Than Regular Green Tea

Matcha is powdered whole green tea leaves and contains significantly more caffeine than brewed green tea — approximately 70 mg per teaspoon. Matcha lattes, matcha ice cream, and matcha baked goods are all more dangerous than regular green tea for dogs.

5. Green Tea Extract Supplements

Green tea extract supplements are highly concentrated and extremely dangerous for dogs. Never give your dog any green tea extract supplement.

What If My Dog Drank Green Tea?

Contact your veterinarian. Provide the amount consumed and your dog's weight. Monitor for restlessness, rapid heart rate, vomiting, or tremors. If your dog consumed matcha or green tea extract, contact animal poison control immediately.

Animal Poison Control: ASPCA (888) 426-4435 | Pet Poison Helpline (855) 764-7661

Safe Drink Alternatives

👉 Stella & Chewy's Bountiful Bone Broth for Dogs — a dog-specific warm drink that is safe, nutritious, and satisfying. Rich in collagen and flavor — the proper warm beverage for dogs instead of green tea.

👉 Virbac Rebound Recuperation Formula for Dogs — a dog-specific hydration and nutrition formula. Supports healthy hydration without caffeine risks.

The Bottom Line

Green tea is not safe for dogs. Caffeine, theobromine, and tannins all contribute to its toxicity. Matcha is more dangerous than regular green tea due to higher caffeine concentration. Green tea extract supplements are extremely dangerous. Fresh water and dog-specific bone broth are always the best drink choices for dogs.