Can Dogs Eat Walnuts?

Can dogs eat walnuts?
If you are a dog owner who loves walnuts and wonders if you can share some with your beloved pet, then it’s important to know that the answer is no.

Dogs should not eat walnuts. While these nuts are a healthy snack for humans, they pose a series of health risks for dogs due to their high fat content and potential for fungal contamination.


One of the common queries many dog owners have is regarding the safety of sharing human foods with their pets. Among such foods, nuts, particularly walnuts, often prompt discussion.

The potential risks and adverse health effects linked with dogs consuming walnuts underline the importance of exploring this topic in depth.

This article aims to provide a comprehensive understanding of why walnuts are off-limits for dogs, supported by professional veterinary opinions and nutritional facts.

Understanding a Dog’s Diet

As omnivores, dogs have dietary needs that encompass both animal and plant-based foods. A healthy canine diet is a balance of proteins, carbohydrates, and fats.

While the majority of a dog’s nutritional needs should be met with specially formulated dog food, some human foods can be safely included as treats or dietary supplements. However, not all human foods are safe for dogs, and walnuts fall into this category.

Walnuts and Their Nutritional Content

For humans, walnuts are often hailed as a nutritional powerhouse. They offer a robust source of omega-3 fatty acids, beneficial for heart health, and a good dose of protein and dietary fibre.

Additionally, walnuts contain a variety of vitamins and minerals such as vitamin E, vitamin B6, and magnesium. These contribute to numerous health benefits in humans, from supporting brain health to promoting healthy skin.

Despite their nutritious profile for humans, walnuts’ high fat content and potential for fungal contamination make them a less than ideal choice for dogs.

Can Dogs Eat Walnuts?

In short, dogs should not eat walnuts. Even though dogs, as omnivores, can handle a variety of foods, walnuts pose several risks that make them unsuitable.

The issues range from immediate physical problems, such as intestinal blockage, to longer-term health concerns like pancreatitis due to their high fat content. Particularly, black walnuts are known to be toxic for dogs and can lead to severe health complications.

It is also worth noting that mouldy walnuts can be extremely harmful, as they may contain tremorgenic mycotoxins, which are known to cause serious neurological conditions in dogs.

Potential Risks of Feeding Walnuts to Dogs

Feeding walnuts to dogs presents several potential risks. Firstly, the high fat content of walnuts can lead to gastrointestinal issues, including vomiting and diarrhoea. Prolonged consumption can even lead to pancreatitis, a serious and potentially life-threatening condition.

Secondly, the size and hard texture of walnuts present a choking hazard and can cause intestinal blockage if swallowed whole, leading to a potentially serious situation requiring veterinary intervention.

The third risk involves mouldy walnuts, which are particularly dangerous. If walnuts are not stored properly, they can develop a toxic mould that produces tremorgenic mycotoxins, leading to tremors, seizures and other serious neurological problems in dogs.

Expert Opinions

Veterinary professionals and pet nutrition experts share a consensus that walnuts should be excluded from a dog’s diet due to the associated risks.

Veterinarians caution against giving dogs walnuts because the potential health risks far outweigh the minimal nutritional benefits they might provide.

If pet owners are considering any changes to their dog’s diet or introducing new foods, it is imperative to consult with a veterinary professional.

They can provide advice tailored to the dog’s specific needs, considering factors such as their breed, age, size, and overall health status.

Alternatives to Walnuts for Dogs

If you’re in search of healthy treat alternatives for your dog, there are plenty of safer options than walnuts.

Fruits like apples and blueberries or vegetables such as carrots and cucumbers can provide beneficial nutrients without the risks associated with walnuts.

If your dog enjoys a nutty flavour, consider offering a small amount of peanut butter as an occasional treat. However, make sure it doesn’t contain xylitol, a sweetener that is highly toxic to dogs.

Another alternative is specially formulated dog treats, which are designed to be both nutritious and safe for dogs.


In conclusion, despite the nutritional benefits walnuts offer to humans, they are not a safe choice for dogs due to their high fat content and the potential risk of mould contamination.

Dogs rely on their owners to provide them with a balanced, nutritious diet that supports their overall health and well-being.

When it comes to choosing treats for your canine companion, it’s always best to stick with foods known to be safe for dogs. Always remember that when in doubt, consult with a veterinary professional.


1. RSPCA. (2022). “A Guide to Your Dog’s Diet”.
2. PetMD. (2021). “Can Dogs Eat Walnuts?”.
3. VCA Hospitals. (2023). “Nutrition – General Feeding Guidelines for Dogs”.

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