Help, My Dog Ate Tea Bags! A Veterinarian Explains What to Do

As a veterinarian and lifelong dog lover, one of the scariest situations for a pet parent is realizing their furry friend has ingested something potentially toxic. And one surprisingly dangerous substance for dogs is something many of us enjoy every day – tea.

That‘s right, if your dog ate tea bags, even just one or two, it could be cause for concern. The caffeine and other stimulants found in most teas can be highly toxic to dogs, leading to some alarming symptoms.

In this article, I‘ll explain why tea is so dangerous for our canine companions, share the warning signs to watch for, and walk you through exactly what to do if you find yourself in this frightening situation. I‘ll also detail how the toxicity risk varies based on the type and amount of tea, as well as your dog‘s size.

But first, let me share a quick story. It was a typical busy day at the animal hospital when a frantic couple rushed in with their pug named Poppy. They had returned home from errands to find that Poppy had torn into a box of green tea bags and ingested several of the bags and loose tea leaves.

Poppy was already beginning to show signs of toxicity – vomiting, shaking, and an elevated heart rate. We immediately induced vomiting, started IV fluids and monitored her closely. Thankfully, with prompt treatment, Poppy made a full recovery. But it was a huge wake up call for her owners about the importance of keeping potentially harmful foods far out of paws‘ reach.

Poppy‘s story had a happy ending, but that isn‘t always the case with dog tea toxicity. In the most severe cases, dogs can experience life-threatening hyperthermia, seizures, coma, and even cardiac arrest from ingesting large amounts of tea.

I‘ll never forget one of my most harrowing cases as an emergency veterinarian. A large Labrador retriever named Bear had eaten an entire box of caffeinated black tea bags while his owner was at work. By the time Bear arrived at the ER, he was having severe uncontrollable tremors and seizures.

We immediately started active cooling measures, IV antiarrhythmia drugs, and anticonvulsants. Despite our most aggressive interventions, Bear developed ventricular tachycardia, an abnormal heart rhythm that can be fatal. We managed to restore his heart function after several rounds of CPR and defibrillation, but it was touch and go for many hours.

Bear was lucky to survive his ordeal, but the road to recovery was long, requiring several days in the ICU and weeks of careful monitoring. His case is an extreme example, but it highlights just how essential it is for dog owners to understand the dangers of tea toxicity and take steps to prevent exposure.

So let‘s dive into the details of why tea is so treacherous for dogs and what you need to know to keep your pup safe.

Why is Tea Toxic to Dogs?

The primary reason tea is toxic to dogs is that it contains caffeine. Caffeine is a powerful stimulant that can dangerously accelerate dogs‘ heart rates and cause a cascade of other alarming symptoms. Compared to humans, dogs are much more sensitive to the effects of caffeine, so even a small amount can make them very sick.

How much caffeine is in tea varies widely depending on the type:

Source: Mayo Clinic

The toxic dose of caffeine for dogs is around 140 mg per kilogram (2.2 pounds) of body weight (Merck Veterinary Manual). So for a 10-pound dog, ingesting around 600 mg of caffeine could be fatal. That means just one cup of coffee or several cups of strong tea could put a small dog at grave risk.

Most teas also include two other stimulants called theobromine and theophylline. Theobromine is the same substance that makes chocolate toxic to dogs. It has a similar chemical structure to caffeine and also dangerously overstimulates the cardiovascular and nervous systems.

Theophylline is an alkaloid compound that occurs naturally in tea and cocoa and is also synthetically produced as a bronchodilator drug. It has the lowest toxicity of the three main tea stimulants but can enhance the effects of caffeine and theobromine. The combination of all three in tea leaves packs a particularly potent toxic punch for dogs.

The risk of tea toxicity in dogs depends on several factors:

• The size of your dog
• How many tea bags or how much loose tea they ingested
• The caffeine and stimulant content of the specific tea variety
• Whether the tea was steeped or the dry tea leaves were consumed directly

In general, the smaller your dog and the more tea they ingest, the greater the danger. A Yorkshire Terrier that scarfs down several tea bags is in far more peril than a Golden Retriever that takes a few sips of cooled tea. Dry, loose tea is especially hazardous because it is highly concentrated.

Signs of Tea Toxicity in Dogs

Knowing the warning signs of tea toxicity in dogs is crucial so you can get your pup appropriate treatment as soon as possible. The symptoms typically begin within 1-2 hours of ingestion and may include:

• Vomiting
• Diarrhea
• Restlessness and hyperactivity
• Rapid breathing or panting
• Elevated heart rate (tachycardia)
• Tremors or twitching
• Seizures
• Collapse or loss of consciousness
• Abnormal heart rhythm (arrhythmia)

If your dog is exhibiting any of these symptoms, especially after possible tea ingestion, call your veterinarian or a pet poison control helpline right away. According to the ASPCA Animal Poison Control Center, they receive hundreds of calls about accidental dog caffeine ingestion every year, with numbers rising recently due to the popularity of coffee pods and home brewing.

Mild signs like slight restlessness or a brief bout of vomiting may resolve on their own, but can quickly escalate into a life-threatening situation without medical care. Severe caffeine toxicity in dogs can progress rapidly to hyperthermia (high fever), seizures, coma, and fatal cardiac arrhythmias without aggressive treatment.

What About Decaf Tea?

You may be wondering, what if my dog ate decaffeinated tea bags? Is that still dangerous?

The short answer is – potentially, yes. The decaffeination process removes 95-99% of the caffeine from tea. So decaf teas still contain some caffeine, just much less than regular caffeinated varieties. For example, an average cup of decaf black tea has about 2-5 mg of caffeine compared to 40-70 mg for caffeinated.

So a 20-pound dog would need to ingest around 50 cups of decaf tea to reach the 140 mg/kg toxic dose threshold. That makes the risk of toxicity from decaf tea much lower overall. But if a small dog ingests multiple decaf tea bags, it could still potentially reach dangerous caffeine levels.

Another caveat is some decaffeinated herbal teas contain other ingredients that are highly toxic to dogs. For example, many "calming" or "sleepytime" teas include chamomile, which can cause bleeding disorders in dogs. Any tea sweetened with xylitol, an artificial sweetener often used in "diet" or "sugar-free" varieties, poses an extreme danger.

As little as 0.1 gram of xylitol per kilogram of body weight can cause a rapid drop in a dog‘s blood sugar, leading to vomiting, seizures, and liver failure (FDA). Given the grave risks of xylitol, if your dog ate any kind of decaffeinated tea, especially an herbal or flavored variety, contact your veterinarian immediately.

Gastrointestinal Obstruction Risks

In addition to toxicity from the stimulants in tea, eating tea bags themselves poses another serious danger – intestinal blockage. Tea bags are usually made of filter paper, silk, or plastic, which are not digestible materials.

If a dog eats one or more tea bags, they can get stuck in the stomach or intestinal tract, partially or completely obstructing the digestive pathways. This can cause symptoms like repeated vomiting, lethargy, abdominal pain, and appetite loss. An untreated obstruction can even lead to fatal complications like stomach rupture and sepsis.

Inducing vomiting can sometimes bring tea bags back up if done within 1-2 hours after ingestion while the bags are still in the stomach. But if the bags have already moved into the intestines, abdominal surgery is often necessary to remove the blockage.

In a retrospective study of 180 dogs that underwent surgery for gastrointestinal foreign bodies, non-food objects like tea bags had a higher risk of intestinal perforation than more digestible items like bones or rawhide (JAVMA). So if your dog ate tea bags, the obstruction danger shouldn‘t be underestimated.

Other Dangerous Tea Ingredients

We‘ve focused a lot on caffeine and other stimulants, but many teas also contain additional ingredients that may be toxic to dogs, such as:

• Citrus oils and peels
• Mint, peppermint, menthol
• Cocoa
• Macadamia nuts
• Alliums like onion and garlic
• Milk and cream (many dogs are lactose intolerant)
• Xylitol or other artificial sweeteners
• Specific plants like chamomile, hibiscus, English ivy, eucalyptus

The ASPCA website maintains a comprehensive list of plants that are toxic vs. non-toxic to dogs and cats. So when you call animal poison control about your dog ingesting tea, provide them the full ingredient list if possible, not just the tea variety, so they can better advise you of the poisoning risks.

Prognosis and Prevention

The prognosis for a dog that ingested tea depends on factors like the tea type and amount consumed, the size of the dog, and the immediacy of treatment. In general, the faster a dog receives veterinary care, the better the expected outcome.

Most dogs that ingest a small amount of weak, steeped tea are likely to recover fully with minimal intervention. But severe cases involving large doses of dry tea leaves or highly-caffeinated varieties can be fatal without rapid, aggressive treatment including IV fluids, anti-seizure and antiarrhythmic medications, cooling measures, and intensive monitoring.

The best way to keep your dog safe is to store all tea, coffee, and other caffeinated products securely out of paws‘ reach. Be mindful of cups of tea left unattended, spilled leaves, and tea bags in the trash or compost. Ideally, place them in a high cabinet, refrigerator, or sealed trash container your curious canine can‘t get into.

Some other tips for dog-proofing your home and preventing accidental toxin ingestion include:

• Use childproof latches on cabinets
• Store food in airtight containers
• Keep trash cans behind closed doors or use dog-proof lids
• Avoid placing toxic houseplants within a dog‘s reach
• Teach dogs the "leave it" command and not to eat things off the ground
• Provide dogs plenty of safe chew toys and puzzles to prevent boredom-induced destructive behavior

If you ever suspect your dog may have ingested tea, tea bags, or any potentially toxic substance, contact your veterinarian, emergency vet clinic, or an animal poison control hotline immediately. The sooner you seek advice on whether treatment is needed, the better the chances of a positive outcome for your pup.

Remember, while we humans love our tea rituals, our canine companions are far better off sticking to plain old water in their bowls. Let‘s save the Oolong and Earl Grey for our own cups and keep our beloved fur babies safe from the perils of tea!