The Hidden Dangers of Acorns for Your Dog's Health
- Tanya Ogland
- Oct 22
- 3 min read
As the leaves turn vibrant shades of orange and yellow, dog owners relish the chance to stroll through parks and enjoy the crisp air. However, one common sight during the autumn months is acorns scattered across the ground. While these little nuts may look harmless, they can present serious health risks to dogs. Knowing the dangers of acorns is vital for any pet owner who wants to ensure the safety and health of their furry friends.
What Are Acorns?
Acorns are the seeds of oak trees, and they vary in shape and size depending on the oak species. While wildlife such as squirrels and deer happily consume acorns, they can be dangerous for dogs. The primary concern is the presence of tannins, along with other harmful compounds in acorns, which can lead to health issues including gastrointestinal distress.
The Toxic Components of Acorns
Acorns contain tannins, which can be toxic when dogs eat them in large amounts. Tannins can irritate the gastrointestinal tract, resulting in issues like vomiting, diarrhoea, and stomach pain. In fact, a study from the Journal of Veterinary Internal Medicine suggests that even a moderate amount of acorns can lead to vomiting in about 30% of dogs. In more serious cases, ingestion may lead to kidney damage or even liver failure.
Symptoms of Acorn Poisoning
If your dog has eaten acorns, keeping an eye out for signs of poisoning is essential. Symptoms may include:
Vomiting
Diarrhoea
Stomach pain
Loss of appetite
Lethargy
If you observe any of these symptoms after your dog may have eaten acorns, please contact your veterinarian without delay.

Risk Factors for Dogs
Some dogs are at greater risk of acorn poisoning. Dogs who love to scavenge or have a habit of eating everything they find are particularly vulnerable. Larger dogs, which may consume several acorns at once, are also at an increased risk. For example, a Labrador Retriever could easily eat 10 to 20 acorns on a single walk, elevating the chances of toxic effects.
Preventing Acorn Ingestion
To keep your dog safe from acorns, consider these preventive steps:
Supervise Outdoor Activities: If walking in areas with oak trees, stay close to prevent your dog from eating acorns.
Training: Teach your dog commands, like “leave it” or “drop it,” to discourage them from picking up and eating acorns.
Lead Walking: Always use a leash in areas with acorns to maintain control over your dog.
What to Do If Your Dog Eats Acorns
If you suspect your dog has ingested acorns, act fast. Here’s what to do:
Assess the Situation: Estimate how many acorns your dog might have eaten and look for immediate symptoms.
Contact Your Veterinarian: Always reach out to a veterinarian, even if your dog seems fine. They may suggest bringing your dog in for further evaluation.
Follow Veterinary Advice: If advised to visit, provide your vet with details about how many acorns were eaten and any symptoms you’ve noticed.
Long-Term Health Effects
Many dogs will recover from minor acorn ingestion with appropriate veterinary care. However, larger amounts can lead to long-lasting health problems. Chronic exposure to tannins can cause kidney damage, which may not show symptoms until it's too late. Regularly monitor your dog’s health after any acorn exposure.

Be Informed to Keep Your Pet Safe
As a responsible pet owner, it is vital to recognise the dangers that acorns pose to your dog’s health. By understanding these risks and taking proactive measures, you can help protect your furry friend throughout the fall season. Always check with your veterinarian if you have any concerns about your dog's health after possible exposure to acorns. Your dog's safety and well-being should always come first.




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