Can dogs drink tea?

A cup of black tea contains about 40 to 50 mg of caffeine, and green tea about 25 to 30 mg. That is less than coffee but still significant for a small dog. Used tea bags hold a surprising amount of caffeine in the leaves, and dogs often chew and swallow them from the bin.

Matcha is powdered whole tea leaves, so a teaspoon can contain 60 mg or more of caffeine.

Beyond caffeine, tea bags can swell with fluid and, with their strings and tags, cause a blockage if several are swallowed. Pyramid-shaped nylon mesh bags are less likely to break down.

Keep tea bags in a lidded bin or compost container your dog cannot open.

Herbal teas are made from a wide range of plants. Some are generally considered mild, but others contain ingredients that can be harmful to dogs, and blends often combine several. Do not give herbal teas to your dog as a remedy without asking your vet.

Some herbal and fruit teas also contain dried grapes, raisins, or sweeteners.

Bottled iced teas and sweet tea contain caffeine plus a lot of sugar or sweeteners. Some diet versions may include xylitol. None of these are suitable drinks for a dog. Keep your dog's water bowl clean and topped up so it has no reason to seek out other drinks.