Do Onions Burn Cats Eyes

Do Onions Burn Cats Eyes?

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Last Updated on November 13, 2022 by Pauline G. Carter

There is a popular belief that onions burn cats eyes. This is because onions contain a compound called thiosulfate, which is also found in tear gas. However, this does not mean that onions are actually harmful to cats.

In fact, they are perfectly safe for them to eat.

There’s a lot of debate on the internet about whether or not onions burn cats’ eyes. Some say that they definitely do, while others claim that onions are actually good for cats’ health. So, what’s the truth?

As it turns out, onions can indeed burn cats’ eyes. This is because onions contain a chemical called thiosulfate, which is toxic to cats and can cause irritation and even permanent damage to their eyes. If your cat happens to eat an onion, it can also lead to gastrointestinal distress and anemia.

So, if you’re wondering whether or not you should keep onions away from your feline friend, the answer is yes! Keep them out of reach of your cat to avoid any potential eye injuries or health problems.

Do Cats Cry When You Cut Onions?

No, cats do not cry when you cut onions.

What Happens If a Cat Smells Onion?

If a cat smells onion, they will most likely avoid it. While the smell of onions is not harmful to cats, they are not particularly fond of the scent. If a cat does happen to eat onion, it can cause them gastrointestinal upset and may result in vomiting or diarrhea.

Do Cats Dislike the Smell of Onion?

While there is no concrete answer as to whether cats dislike the smell of onion, there are a few potential reasons why your feline friend may not be a fan. For one, onions contain a compound called thiosulfinate, which can be irritating to a cat’s nose and throat. Additionally, onions are part of the Allium family of plants, which also includes garlic, leeks, and chives – all of which are known to be toxic to cats.

So while we can’t say for sure that cats don’t like the smell of onions, it’s probably best to keep them away from your kitty just to be safe!

Are Onion Skins Toxic to Cats?

There is a lot of debate on the internet about whether or not onion skins are toxic to cats. The short answer is that they are not toxic, but they can cause gastrointestinal upset if your cat eats them. Onions contain a compound called thiosulfate, which can be toxic to cats in high doses.

However, the amount of thiosulfate in onion skins is much lower than the amount found in onions themselves. This means that while eating a small amount of onion skin may not harm your cat, it could still make them sick. If your cat ate a large quantity of onion skin, it could potentially be fatal.

If you think your cat has eaten any onion skin, it’s important to watch for signs of gastrointestinal upset such as vomiting or diarrhea. If you notice these symptoms, contact your veterinarian right away. They will likely want to do some blood work to check for anemia caused by the thiosulfate in the onions.

Overall, while onion skins are not technically toxic to cats, they can still make them sick. It’s best to err on the side of caution and keep your kitty away from them altogether!

Grey Cat Has Burning Eyes From Cutting Onions

Cat Crying from Onions

If your cat cries from onions, it’s likely due to the presence of a chemical called thiosulfate. This substance is found in onion plants and can be toxic to cats if ingested in large quantities. While a small amount of onion may not cause any harm, eating too much can lead to serious health problems like anemia and liver damage.

If you think your cat has eaten onions, watch for signs of illness such as lethargy, vomiting, or diarrhea. If your pet shows any of these symptoms, contact your veterinarian immediately.


Onions are a common ingredient in many dishes, but did you know that they can actually burn your cat’s eyes? That’s right – onions contain a compound called sulfenic acid, which can cause irritation and inflammation when it comes into contact with your cat’s eyes. If your kitty happens to get onion juice in her eyes, you may notice her rubbing them or pawing at them frantically.

She may also have red, watery eyes and swollen eyelids. If you think your cat has gotten onion juice in her eyes, immediately flush them out with cool water for several minutes. Then, call your veterinarian for further instructions.

About Author (Pauline G. Carter)

Pauline G. Carter

Pauline G. Carter is a well-known pet blogger who has written about the world of pets for several years. She is passionate about pets, from cats and dogs to birds, reptiles, and poultry. Her blog, which is updated regularly, is filled with articles and guides on pet care, nutrition, and training. She also shares her experiences and observations on pet ownership, making her blog relatable and informative for pet lovers. She is a true animal advocate and is dedicated to promoting responsible pet ownership. Let’s Go …

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