Can Rabbits Eat Onions? 10 Things You May Not Know

It’s a regular inquiry. If so, do rabbits like onions? As onions are commonplace in most kitchens, the question of whether or not rabbits can eat them arises frequently. But are they just as good for our rabbits’ health as they are for our own?

Before we start feeding our pet rabbits onion slices, let’s do some research. Providing our rabbits with a balanced diet is essential, but we must also ensure that they are not given any harmful foods.

Can Rabbits Eat Onions

Don’t give your rabbit any food that contains onion or other alliums. It’s possible for rabbits to experience anaphylactic shock or hemolytic anemia as a result of ingesting them.

In addition to being immunosuppressant and potentially causing vertigo, they are also a depressant. Onions and other foods containing onions should never be given to a rabbit.

No rabbit should ever be fed an onion, despite the fact that onions are healthy for humans.

You might want to secure your onions in the garden from your rabbit if it runs free there. Even though most rabbits won’t eat onions, it’s best not to take any chances with your pet.

The Onion Family and Their Benefits

The common onion, also known as the simple onion, is a member of the Allium family of vegetables, which also includes garlic, leek, and chive.

Humans can benefit greatly from these herbs because they strengthen the immune system and aid in the fight against disease.

In addition to their many other health benefits, onions and related herbs can reduce inflammation and even help prevent cancer.

Antioxidants, iron, calcium, phosphorus, folate, vitamin C, vitamin B6, and a plethora of other minerals and vitamins are all present in large quantities.

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Is it safe for rabbits to eat onions, considering how beneficial they are to humans? Or will doing so cause them harm, such as in the form of sickness or stomach pain?

Why Are Onions So Dangerous?

There are many reasons why onions are bad for rabbits. Thiosulfate, an ingredient in both, is toxic to rabbits and will have an effect on their red blood cells.

Hemolytic anemia, brought on by onion consumption, can cause the red blood cells to burst.

If your rabbit eats too much onion, it could die, and there’s not much you can do about it.

Unfortunately, once a rabbit has swallowed an unpalatable food item, there is no way to force it back up.

To add insult to injury, onions have a compound called organosulfur that can increase your rabbit’s susceptibility to absorbing toxins through its digestive system.

And even if the onion doesn’t kill your rabbit outright, the immunosuppressant effect may leave it more susceptible to disease.

After consuming onion, your rabbit may exhibit sluggish or dizzy behavior. In case your rabbit is stumbling around like it’s drunk, blame the onion. Excessive consumption of onion can result in severe anemia and even death.

Lastly, onion can trigger anaphylactic shock in your rabbit.

Make sure you don’t give your rabbit any onion, even if you think it’s too small of an amount to kill it.

What Should I Do If My Rabbit Eats Onions?

Despite precautions, mishaps can still occur on occasion.

If you leave something that smells appetizing within your rabbit’s reach, it is possible for your rabbit to eat onions despite the fact that most rabbits will know better.

Your bunny might be interested in an onion sandwich.

It’s important to get your rabbit to the vet ASAP if it accidentally ate some onion. In any case, the sooner you get medical help for your rabbit, the better its chances of survival, even if it doesn’t experience all of the above.

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Even though it’s possible that your pet won’t experience any ill effects from eating a small amount of onion, it’s always better to be safe than sorry, so consult your veterinarian to find out what to do.

Don’t wait if your rabbit is experiencing dizziness or other distressing symptoms; if left untreated, it could die.

The rabbit should be kept quiet and without food until it can be taken to the vet.

Avoid putting any strain on it and see a doctor right away.

Can Rabbits Eat Other Kinds Of Onions?

However, you may be wondering if there are any other types of onions that are safe for your rabbit to eat besides white onions.

In contrast, white onions, red onions, and green onions should all be avoided.

You should not put any of these in your rabbit’s bowl or leave them within the cage where it can get chopped up. The rabbit could be killed by even a small amount of any of these plants because they all contain these toxins.

Garlic and chives are also in this family and should be avoided. They shouldn’t be given to a rabbit because they are unsafe.

Can I Give Any Part Of The Onion To My Rabbit?

The toxins can be found in any part of the onion plant, so it’s not safe to feed your rabbit. Onions, onion leaves, onion skin, or onion roots are toxic to rabbits.

Never give your rabbit any scraps from a meal that included onions. Don’t touch your bunny without first washing your hands.

Naturally, rabbits shouldn’t be fed cooked food, but especially avoid giving them any scraps that might contain onions.

This is also true of salads, which often feature pungent ingredients like raw onion or garlic.

Make sure no onion or garlic was used in the preparation of the food you intend to feed your rabbit, or check the ingredients list to be sure.

If you are unsure whether or not the food contains onion, do not feed it to your rabbit.

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What About Green Onions?

It’s been established that certain fruits and vegetables, or even just parts of those foods, can be consumed by rabbits, but what about green onions?

Should we feed our furry hopping friends green onions, or are they too toxic?

All green onions really are are unripe onions.

Although the onion is harvested before it is ready, its immature bulb still contains the same compounds that those found in fully developed onions.

Green onions are off-limits as well because they contain sulphur compounds, though at a lower concentration.

Are Red Onions any Better?

Regrettably, there is no benefit to using red onions rather than white onions.

Although the good and bad substances, nutrients, and minerals in red onions are present in slightly different proportions, the vegetable should never be fed to rabbits.

What Are The Symptoms Of A Rabbit Eating Onion?

You should watch for signs of weakness, dizziness, or similar behavior in your rabbit if you suspect he has eaten too much onion, garlic, or a related vegetable.

You should take your rabbit to the vet if you notice any of these symptoms, or if you have any reason to suspect that he has eaten these vegetables or any part of them.

What Else Can Rabbits Have?

Fruits and vegetables are good for rabbits, and you can feel comfortable providing your pet with as much as 10% of its daily caloric intake in this form. Select only the foods you know to be healthy and non-hazardous.

  • Root vegetables and their greens
  • Lettuces of a darker hue (like Romaine)
  • Bananas
  • Berries
  • Endive
  • Beans, green
  • Celery
  • Squash
  • Basil
  • Zucchini

Some rabbits may experience stomach upsets from even seemingly harmless foods, so it’s important to test a small amount of the food first.


Although a wide variety of foods and treats should be offered to your rabbit, you should never give him onions or any other part of an onion, no matter how small, because doing so can lead to blood-related diseases, other serious health problems, and even death.

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