Walnuts for Dogs aren’t classified as highly toxic, yet they pose several risks that make them unsafe for canine consumption. As a dog owner, you may have found yourself wondering if it’s safe to share walnuts with your furry friend. Perhaps the thought crossed your mind while you were cracking open a few walnuts for a snack. If humans can enjoy walnuts, can dogs eat them too? The short answer is no, dogs cannot safely eat walnuts.
The primary concern is the presence of mold, particularly in moldy walnuts or black walnuts. These can contain tremorgenic mycotoxins, which are highly toxic to dogs. Tremorgenic mycotoxins can cause a range of severe symptoms, including vomiting, diarrhea, fever, neurological issues, and even seizures.
Why Are Walnuts Dangerous for Dogs?
There are several reasons why walnuts are a poor choice for dogs.
- Toxicity from Mold: Moldy walnuts, including black walnuts, can harbor tremorgenic mycotoxins. These substances are dangerous for dogs and can lead to severe health issues. Symptoms of tremorgenic mycotoxin poisoning may include vomiting, diarrhea, fever, tremors, and seizures. The toxins affect the nervous system, and in extreme cases, ingestion can be fatal without prompt veterinary treatment.
- Choking Hazards: The hard shells of walnuts pose a significant choking risk. Dogs might struggle to chew the shells, and if swallowed, they could lead to choking or gastrointestinal blockages. Even cracked or fragmented walnut shells can become lodged in a dog’s digestive tract. Yet it leads to potential obstructions that could require surgical intervention.
- High Fat Content: Walnuts are rich in fat, which is not easily digestible for dogs. A diet high in fat can lead to pancreatitis, a painful and potentially serious condition where the pancreas becomes inflamed. Symptoms of pancreatitis in dogs include vomiting, abdominal pain, loss of appetite, and lethargy. High-fat foods can also contribute to obesity and other health problems in dogs.
What to Do if Your Dog Eats Walnuts

If your dog has consumed walnuts, it’s crucial to monitor them closely for any signs of distress.
- Immediate Monitoring: If your dog has eaten shelled walnuts, observe them for any immediate symptoms such as vomiting, diarrhea, or signs of discomfort. Try to estimate how many walnuts your dog consumed and whether any shells were ingested.
- Consult Your Veterinarian: If you suspect your dog has eaten a significant amount of walnuts, or if they’ve ingested walnut shells, it’s best to contact your veterinarian. Ingesting walnut shells can lead to internal obstructions or perforations, which might not present symptoms immediately but can be life-threatening if untreated. Your vet may recommend bringing your dog in for a check-up to ensure there are no complications.
- Veterinary Attention for Moldy Walnuts: If you know or suspect that your dog has eaten moldy walnuts, seek veterinary care immediately. The presence of tremorgenic mycotoxins can cause rapid and severe symptoms, and prompt treatment is essential to prevent long-term damage or death.
Conclusion
In summary, while walnuts may seem like a harmless snack to share with your dog, they come with risks that outweigh any potential benefits. From the dangers of mold and high-fat content to the risk of choking on the shells, walnuts should be kept out of your dog’s diet. If you want to treat your dog to a snack, stick to dog-safe alternatives like carrots, apples (without seeds), or specially formulated dog treats.