Fast Food

Can Dogs Eat Walkers Cheese and Onion Crisps? Onion Risks

Wondering if your dog can munch on Walkers Cheese and Onion Crisps? Discover the potential risks of onions for dogs and safer snack alternatives here!
Author: Veterinary Team
Dial A Vet
Updated
May 26, 2025
|
Published
May 26, 2025
A dog curiously sniffing a bag of Walkers cheese and onion crisps, highlighting pet food safety concerns.

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We’ve all been there—enjoying a bag of crisps when your dog looks up at you with those irresistible puppy eyes. But before you toss your furry friend a piece of your Walkers Cheese and Onion crisps, it’s important to pause and consider: can dogs safely eat them? The answer might surprise you, especially when you factor in the hidden risks of onions for dogs.

🧅 Are Cheese and Onion Crisps Safe for Dogs?

Cheese and onion crisps might seem harmless at first glance, but they are far from ideal for your canine companion. While cheese itself is not toxic to dogs in small amounts, the onion powder found in these crisps is a different story. Onions, along with other members of the allium family like garlic and leeks, are toxic to dogs and can lead to serious health issues.

Even a small amount of onion powder, which is often concentrated in processed snacks, can harm your dog. The key culprit is a compound called thiosulfate, which dogs cannot properly digest. This compound can damage their red blood cells, leading to a condition called hemolytic anemia.

🍟 Why Are Onions Dangerous for Dogs?

Onions contain toxic compounds that affect your dog’s red blood cells, reducing their ability to carry oxygen. This can result in symptoms ranging from mild to severe, depending on the amount of onion ingested. Even foods with onion powder, like crisps, soups, or gravies, pose a risk because the powder is a concentrated form of onion.

Signs of onion toxicity in dogs include:

  • Vomiting
  • Diarrhea
  • Lethargy or weakness
  • Pale gums
  • Increased heart rate
  • Collapse or fainting (in severe cases)

It’s worth noting that the toxic dose of onions for dogs is approximately 0.5% of their body weight. For example, a 10kg dog could experience toxicity after consuming just 50 grams of onion—equivalent to a small portion of crisps containing onion powder.

🛑 Other Harmful Ingredients in Cheese and Onion Crisps

Onions aren’t the only issue when it comes to feeding dogs cheese and onion crisps. These snacks are loaded with other ingredients that are unsuitable for dogs, including:

  • Excess salt, which can lead to sodium poisoning
  • High-fat content, which may cause pancreatitis
  • Artificial flavors and preservatives that are hard for dogs to digest

Salt poisoning is particularly dangerous and can result in symptoms like excessive thirst, vomiting, diarrhea, and even seizures. Meanwhile, high-fat snacks can upset your dog’s stomach or lead to chronic conditions like obesity and pancreatitis over time.

🐾 What to Do If Your Dog Eats Cheese and Onion Crisps

If your dog accidentally eats a small piece of cheese and onion crisps, they may not show immediate symptoms, but it’s still important to monitor them closely. Watch for any signs of onion toxicity or digestive upset, such as vomiting or lethargy.

If your dog consumes a significant amount of cheese and onion crisps, follow these steps:

  • Remove any remaining crisps from their reach
  • Contact your vet immediately for advice
  • Be prepared to provide details about the amount consumed and your dog’s weight

Your vet may recommend inducing vomiting or bringing your dog in for treatment, depending on the severity of the situation. Time is of the essence when dealing with onion toxicity, so don’t delay seeking professional help.

🥕 Safe Snack Alternatives for Dogs

Instead of sharing your crisps, consider offering your dog a healthier, pet-safe treat. There are plenty of human foods that dogs can enjoy without any risk of toxicity. Some great options include:

  • Carrot sticks
  • Apple slices (without seeds)
  • Plain, unsalted popcorn
  • Cooked sweet potato
  • Small cubes of plain, low-fat cheese

Always introduce new foods to your dog’s diet gradually and in moderation to avoid upsetting their stomach. When in doubt, consult your vet before offering any unfamiliar treats.

⚠️ When to See a Vet

If your dog shows any symptoms of onion toxicity or digestive distress after eating cheese and onion crisps, don’t wait to see if they improve on their own. Contact your vet immediately. Early intervention can make a significant difference in your dog’s recovery.

In severe cases of onion poisoning, your dog may require hospitalization, IV fluids, or even a blood transfusion. Seeking prompt veterinary care can help prevent complications and ensure the best outcome for your pet.

FAQs

Can dogs eat any type of crisps?

It’s best to avoid feeding your dog crisps altogether. Most varieties are high in salt, fat, and artificial ingredients that are unhealthy for dogs.

What happens if my dog eats a small amount of onion?

Even small amounts of onion can cause toxicity in dogs. Symptoms may not appear immediately, so monitor your dog closely and contact your vet if you’re concerned.

Are other flavors of Walkers crisps safe for dogs?

Most crisps, regardless of flavor, contain high levels of salt and fat that are unsuitable for dogs. Stick to pet-safe treats instead.

How much onion is toxic to dogs?

The toxic dose of onion is roughly 0.5% of a dog’s body weight. For a 10kg dog, just 50 grams of onion can cause toxicity.

Can I give my dog plain cheese as a treat?

Yes, plain, low-fat cheese can be given as an occasional treat in small amounts. Avoid processed or flavored cheeses with added ingredients like onion or garlic.

References

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While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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