
While cheese can be a tasty treat for dogs, there are some varieties that should be avoided. Blue cheese, in particular, has been flagged as unsafe for dogs due to the presence of a certain fungus used in its production. This fungus can produce a toxin called roquefortine C, which can be harmful or even lethal to dogs. As such, it is recommended to keep blue cheese away from dogs and consult a veterinarian if any accidental consumption occurs.
Is it safe to give dogs blue cheese?
| Characteristics | Values |
|---|---|
| Safe for dogs | No |
| Reasons | The addition of a certain fungus in blue cheese can be toxic and negatively impact a dog. It can produce roquefortine C, which can bring on a number of symptoms in dogs. It is also high in fat and calories and can lead to pancreatitis and obesity in dogs. |
| Symptoms | Vomiting, diarrhoea, shivering, spasms, lethargy, neurological symptoms (i.e. confusion, aggression), abdominal pain, upset stomach |
| What to do if consumed | Contact your veterinarian straight away |
| Safe alternatives | Cottage cheese, mozzarella, cheddar, baby carrots, sliced cucumbers, apples (without seeds), blueberries, cooked chicken or turkey breast, anchovies, homemade dog biscuits |
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What You'll Learn
- Blue cheese is high in fat and can lead to obesity and heart disease in dogs
- The fungus in blue cheese can be toxic to dogs and cause vomiting and diarrhoea
- Dogs can be lactose intolerant, so cheese can cause an upset stomach
- Blue cheese can cause an allergic reaction in dogs
- Safer alternatives to blue cheese as a dog treat include carrots, cucumber, chicken, and salmon

Blue cheese is high in fat and can lead to obesity and heart disease in dogs
Blue cheese is not safe for dogs to eat. While cheese is not toxic to dogs, blue cheese is high in fat and can lead to obesity and heart disease in dogs. It can also cause pancreatitis, abdominal pain, and an upset stomach. In addition, the fungus used to make blue cheese can produce a substance called roquefortine C, which is toxic to dogs and can cause a range of symptoms, including vomiting, diarrhoea, shivering, spasms, lethargy, and neurological symptoms such as confusion and aggression. There have been documented cases of dogs dying from consuming old blue cheese, so it is important to keep it away from your dog at all times.
The high-fat content of blue cheese is not the only concern when it comes to the health of dogs. Even a tiny amount of blue cheese might be enough to cause an upset stomach and abdominal pain. The fungus in blue cheese, which gives it its distinctive marbled look, can be toxic to dogs and bring on a range of symptoms. If your dog accidentally consumes blue cheese, it is recommended to contact your veterinarian for advice and to monitor your dog for any signs or symptoms of distress.
The potential dangers of blue cheese to dogs' health and well-being cannot be overstated. The high fat, calorie, and salt content of blue cheese can have negative consequences for dogs, especially those that are overweight or have kidney problems. It is crucial to prioritize the safety of your dog by being vigilant about their diet and seeking professional guidance from a veterinarian when needed.
It is worth noting that cheese, in general, does not offer any significant health benefits to dogs. While it contains protein, calcium, vitamin A, essential fatty acids, and B-complex vitamins, these nutrients are already present in a complete dog food diet. Therefore, there is no need to add cheese to their diet, and it should only be given as an occasional treat in small amounts.
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The fungus in blue cheese can be toxic to dogs and cause vomiting and diarrhoea
While cheese is generally not toxic to dogs, blue cheese is an exception. The fungus in blue cheese can be toxic to dogs and cause vomiting and diarrhoea. This fungus, which gives blue cheese its distinctive marbled look, produces a substance called roquefortine C, which dogs can be very sensitive to. The substance is a toxin that can be lethal to dogs, with documented cases of dogs dying from consuming old blue cheese.
The consumption of blue cheese by dogs can lead to various health issues. The high-fat content in blue cheese can put dogs at risk for heart disease, pancreatitis, and obesity. Additionally, blue cheese is high in salt, which can be dangerous for dogs. Even a tiny amount of blue cheese may be harmful, and if ingested, it is recommended to monitor your dog for any signs of distress or the aforementioned symptoms.
If your dog accidentally consumes blue cheese, it is advisable to contact your veterinarian immediately. They can provide guidance and advice specific to your dog's needs and help determine if medical attention is required. It is important to be vigilant about your dog's diet and seek professional guidance when needed to ensure their safety and well-being.
It is worth noting that cheese, in general, should be given to dogs in moderation and as an occasional treat. Even mild cheeses like cheddar or mozzarella, which are safer options, should be provided in small amounts due to the potential for lactose intolerance and stomach upset in dogs.
As an alternative to cheese, dog owners can consider healthier treats such as vegetables, fruits, or lean proteins. For example, baby carrots, sliced cucumbers, apples (without seeds), blueberries, cooked chicken, or turkey breast can provide similar nutritional benefits without the risks associated with blue cheese consumption.
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Dogs can be lactose intolerant, so cheese can cause an upset stomach
While cheese is not considered toxic to dogs, it does contain lactose, which can cause an upset stomach for dogs with lactose intolerance. Dogs with this condition should avoid all dairy products. Even for dogs that are not lactose intolerant, cheese should only be given in small amounts as an occasional treat due to its high-fat content, which can lead to pancreatitis and obesity.
Blue cheese, in particular, should be avoided due to the presence of a fungus that gives it its distinctive marbled look. This fungus can produce roquefortine C, which dogs can be very sensitive to. Ingesting blue cheese may lead to a range of symptoms in dogs, including vomiting, diarrhoea, shivering, spasms, lethargy, and neurological symptoms such as confusion and aggression. There have even been documented cases of dogs dying from consuming old blue cheese.
If your dog accidentally consumes blue cheese, it is recommended to consult your veterinarian, especially if they display any concerning symptoms. The veterinarian will advise you on which signs to look out for and whether your dog requires medical attention.
It is important to be vigilant about your dog's diet and seek professional guidance when needed. There are healthier alternatives to cheese that can be enjoyed by dogs in small amounts, such as vegetables, fruits, and lean proteins. For example, baby carrots, sliced cucumbers, apples (without seeds), blueberries, cooked chicken, or turkey breast can be safe and nutritious treats for your dog.
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Blue cheese can cause an allergic reaction in dogs
Blue cheese is not safe for dogs to eat. While cheese is not considered toxic to dogs, blue cheese contains a fungus that can be toxic and cause an allergic reaction in dogs. This fungus, which gives blue cheese its distinctive marbled look, produces a substance called roquefortine C, which can be harmful to dogs.
The symptoms of an allergic reaction to blue cheese in dogs can include vomiting, diarrhoea, high temperatures, and even seizures. These symptoms can be severe and may require immediate veterinary attention. Therefore, it is important to keep blue cheese away from dogs and seek veterinary advice if your dog accidentally consumes any.
The high fat and sodium content in blue cheese can also be dangerous for dogs, especially those that are obese or have kidney problems. Too much fat in a dog's diet can lead to pancreatitis and obesity. Additionally, the mould in blue cheese can be toxic to dogs, even in small quantities.
If you want to give your dog cheese, it is best to choose mild, low-fat, and low-lactose options like mozzarella or cottage cheese. Always introduce new foods in small amounts to monitor how your dog reacts and prioritise your dog's health by providing a balanced diet suitable for their nutritional needs.
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Safer alternatives to blue cheese as a dog treat include carrots, cucumber, chicken, and salmon
Blue cheese is a popular delicacy among humans, but it is not a suitable treat for dogs. Blue cheese is produced using a fungus that can negatively impact a dog's health. This fungus is what gives blue cheese its distinctive marbled look, but it can also produce a substance called roquefortine C, which is toxic to dogs.
Cooked chicken or turkey breast is a tasty and protein-rich treat for dogs. Lean protein helps to support muscle growth and maintenance and can be a good alternative to high-fat cheeses. Salmon is another excellent source of protein and good fats, such as omega-3 fatty acids, which promote joint and brain health and boost the immune system. It is important to ensure that any salmon given to dogs is fully cooked, as raw or undercooked salmon may contain parasites that can make dogs very sick.
Other safe alternatives to blue cheese for dogs include low-fat and low-lactose cheeses, such as cottage cheese, mozzarella, and cheddar. These cheeses can be offered as occasional treats in small amounts. It is always important to prioritize a dog's health by offering treats in moderation and being mindful of any food sensitivities or allergies they may have. Consulting with a veterinarian is the best way to ensure a dog's diet is safe and nutritionally balanced.
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Frequently asked questions
Blue cheese is not toxic to dogs as such, but the fungus involved in making blue cheese can produce a substance called roquefortine C, which dogs can be very sensitive to. If ingested, dogs may develop symptoms such as a high temperature.
If your dog ate blue cheese, it is safe practice to contact your veterinarian straight away. They will advise you on which signs and symptoms could be cause for alarm and whether your dog needs medical help.
Yes, if you want to give your dog cheese, opt for mild, low-fat cheeses like cheddar, mozzarella, or cottage cheese.

























