
Dogs have a different digestive system than humans, and certain foods that are safe for us can be toxic to them. Cheese and onion crisps, for example, can cause a range of health problems for dogs due to their high levels of salt, fat, and artificial flavours. Onions, in particular, contain thiosulphate, which can damage a dog's red blood cells and lead to anaemia. While a single crisp on rare occasions may not be harmful, dogs should not consume crisps regularly.
| Characteristics | Values |
|---|---|
| Toxicity | Onions are toxic to dogs and can damage their red blood cells, leading to anemia. |
| Nutritional value | Crisps have no nutritional value for dogs and are high in salt, fat, and artificial flavors. |
| Health risks | Consuming cheese and onion crisps can cause stomach upset, obesity, and other health problems in dogs. |
| Safe consumption | A small amount of crisps on rare occasions is unlikely to harm a healthy adult dog. |
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What You'll Learn

Onions are toxic to dogs
The American Kennel Club (AKC) specifically warns against giving dogs cheese and onion crisps due to the potential for onion toxicity. Onion toxicity can cause damage to a dog's red blood cells, leading to anaemia. This is a serious condition that requires veterinary attention.
In addition to the onion content, cheese and onion crisps also tend to be high in salt and artificial flavours, which can be harmful to dogs. A single serving of crisps can contain a dog's entire recommended daily allowance of salt. Most dog foods already contain the necessary amount of salt for a dog to stay healthy, so adding extra salt to their diet can be dangerous.
While a single crisp on a rare occasion is unlikely to cause harm, it is important to remember that crisps offer no nutritional value to dogs. They are high in fat and carbohydrates, which can contribute to obesity and other health issues in dogs. Therefore, it is best to avoid giving dogs cheese and onion crisps or any other type of crisp as a treat.
If you suspect your dog has consumed a toxic amount of onion, it is important to seek veterinary advice as soon as possible. The symptoms of onion toxicity in dogs may include weakness, lethargy, and pale gums, and veterinary intervention is often necessary to treat anaemia and ensure your dog's full recovery.
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Cheese can cause stomach issues
While a single crisp on rare occasions should be safe for a healthy adult dog, it is not a snack you should encourage. Cheese and onion crisps are not suitable for dogs as they can cause a range of health problems. Firstly, cheese can often give your dog a stomach upset, so it is not a very healthy treat. Dogs have a different digestive system than humans, and certain foods that are safe for us can be toxic to them.
Onion is toxic to dogs, and although the amount in a packet of crisps is not enough to poison your dog, eating a little onion regularly can lead to problems, even if it is in powdered form. Even dogs who eat small amounts of onion regularly can develop anaemia. Onions contain a substance called thiosulphate, which can damage a dog's red blood cells and lead to anaemia. This can cause symptoms such as weakness, lethargy, and pale gums.
In addition to the onion content, cheese and onion crisps also contain high levels of salt and artificial flavours, which can be harmful to your dog's health. Just 12.5g of crisps has 0.2g of salt, which is the entirety of a medium dog's recommended daily allowance. Most dog foods already have the levels of salt a dog needs to stay healthy, so a salty snack will likely push them into unhealthy levels of salt consumption.
Therefore, while a single cheese and onion crisp may not cause serious harm, you should not feed them to your dog regularly due to the potential for stomach issues and other health problems.
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Salt is unhealthy for dogs
While a single crisp on rare occasions may be safe for a healthy adult dog, it is not a recommended snack and should not be used as a treat. This is because crisps are high in salt, fat, and saturated fat. For example, Pringles, which are made from a dough of potato starch, water, and cornflour that is deep-fried and seasoned, are extremely salty and fatty. In fact, 30g of plain Pringles usually has more salt, fat, and saturated fat than a similar-sized bag of crisps. Similarly, salt and vinegar crisps have an extremely high salt content. Just 12.5g of crisps has 0.2g of salt, which is the entirety of a medium dog's recommended daily allowance. Most dog foods already have the levels of salt a dog needs to stay healthy, so a salty snack will likely push them into unhealthy levels of salt consumption.
Some dog owners may argue that a little bit of salt can provide a good source of sodium for their dogs. However, it is important to note that most dog foods already contain the necessary levels of salt for dogs to stay healthy. Therefore, any additional salt from snacks like crisps will only lead to excessive and unhealthy salt consumption.
It is also worth noting that dogs have a different digestive system than humans, and certain foods that are safe for humans can be toxic to dogs. For example, onions are toxic to dogs and can cause damage to their red blood cells, leading to anemia. Similarly, garlic is toxic to dogs and can cause health issues even in small amounts. Therefore, it is best to avoid giving your dog any crisps that contain onion or garlic powder, as these ingredients can be harmful even in powdered form.
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Crisps have no nutritional value
While the odd crisp won't cause serious harm to your dog, they have no nutritional value. The only thing they provide is carbohydrates, which are already included in dog food.
Crisps are typically high in calories, saturated fat, and salt, and low in protein, fibre, and other essential nutrients. They are highly processed and often contain artificial additives, flavourings, sugar, and inflammatory oils.
For example, a 30g portion of Pringles (around 13 crisps) is highly calorific and has zero nutritional value. They are highly processed with maltodextrin, an emulsifier, and colourings. They are also made with dehydrated potatoes, which means all the water has been removed. This, combined with the added salt, tricks you into eating more.
Similarly, the cheese and onion, and prawn cocktail flavours of crisps contain far more artificial ingredients and are high in salt, with around 7g per pack.
As a result, crisps are not a nutritious snack option and should be consumed occasionally, if at all.
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Artificial flavours are harmful
While a single crisp on rare occasions is unlikely to cause harm to a healthy adult dog, it is not a recommended snack and is definitely not a good choice for a treat. Cheese and onion crisps, in particular, can be harmful to dogs due to their high levels of salt and artificial flavours.
Firstly, the onion content in cheese and onion crisps can be harmful to dogs. Onions contain a substance called thiosulphate, which can damage a dog's red blood cells and lead to anaemia. This can cause symptoms such as weakness, lethargy, and pale gums. Even small amounts of onion or garlic, regularly consumed, can lead to anaemia. Therefore, it is recommended to look out for onion or garlic flavouring in crisps, as those ingredients are toxic to dogs in any form, and veterinary intervention is recommended.
Secondly, the high levels of salt in cheese and onion crisps can be harmful to dogs. Most dog foods already contain the levels of salt that a dog needs to stay healthy, so a salty snack will likely push them into unhealthy levels of salt consumption. For example, just 12.5g of salt and vinegar crisps contain 0.2g of salt, which is the entirety of a medium dog's recommended daily allowance.
Thirdly, cheese and onion crisps may contain artificial flavours and preservatives that could be harmful to dogs. While a single crisp with artificial flavours is unlikely to cause serious harm, consuming a significant amount of crisps with artificial ingredients may lead to health problems and veterinary intervention may be required.
In conclusion, while a single cheese and onion crisp is unlikely to cause harm to a healthy adult dog, they should not be fed to dogs regularly due to the potential health risks associated with their high levels of salt and artificial flavours, as well as the toxic effects of onion and garlic. It is important for dog owners to be aware of the potential risks and to feed their dogs a healthy and varied diet, avoiding human junk food as much as possible.
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Frequently asked questions
Yes, cheese and onion crisps are not suitable for dogs due to their high salt, fat, and artificial flavour content. Onion powder found in crisps is toxic to dogs and can cause damage to their red blood cells, leading to anaemia.
Symptoms of anaemia include weakness, lethargy, and pale gums.
Yes, any crisp flavour containing garlic or onion powder, such as salt and vinegar, prawn cocktail, and onion rings, should be avoided. Pringles and other types of corn chips, such as tortilla chips and nachos, are also not recommended due to their high salt and fat content.
Plain pita chips or a single potato crisp on a rare occasion should be safe for a healthy adult dog. However, it is important to remember that crisps have no nutritional value for dogs and can contribute to obesity, so they should not be given regularly.
If your dog consumes a significant amount of cheese and onion crisps, you should contact your veterinarian as soon as possible. They will be able to advise you on any necessary steps to take to ensure your dog's safety.




















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