Can Rabbits Eat Onions? Good or Harmful

This is a very common question. Since onions are often found in our kitchens, many people wonder if they can give them to their rabbits. But the question is: are they only good for us or also for our little jumping friends?

Let’s find out together. It is important to vary your rabbit’s diet, but it is equally important to know what to feed it and what not to.

Onion and its benefits

Onion belongs to the Allium family, whose close relatives include garlic, leek, and chives. These herbs have many beneficial effects on our body and help strengthen our immune system. They help digestion and the heart, act as an anti-inflammatory, and have anti-cancer properties.

They also contain many vitamins and minerals, antioxidants, iron, calcium, phosphorus, folic acid, vitamin C, vitamin B6, and much more.

But can rabbits eat them?

Can rabbits eat onions? 

With all their great properties, it’s hard to believe: rabbits CANNOT eat onions; they are in fact considered toxic for our little friends.

Even in nature, rabbits do not eat onions: their smell acts as a natural repellent. However, in the absence of anything else, there is the risk that they will try to taste them: do not leave them in the kitchen, “within rabbit reach”. All other plants related to the onion should also be kept out of their reach.

Why are they bad for rabbits?

Onions, garlic, and other herbs in this family are toxic to rabbits and can cause problems for other animals as well. They are difficult to digest and normally all animals avoid them.

If ingested, onions can cause anemia in the rabbit; it is a disease linked to the blood, which loses red blood cells. In severe cases, it can even lead to death.

In addition, for rabbits, onions are immunosuppressants, which means that they weaken their immune system; they can also cause anaphylactic reactions.

For these reasons it is absolutely forbidden to give onions and other herbs similar to our bunnies: ingestion could cause very serious damage.

And the green onions?

Sometimes, certain parts of fruits and vegetables can be given to your rabbit. Let’s find out if green onions fall into this category: are they good for our rabbits, or are they harmful?

Green onions are nothing but not quite ripe onions. The bulb comes out of the earth before it has completed its growth, but this does not mean that it does not already contain the same substances as the ripe onion: the substances present are the same but in smaller quantities. The answer, therefore, is “no” again.

Can red onions be given to rabbits?

Red onions are similar to white onions, so there is no difference. They contain the same substances as white onions, but in different quantities: the answer, therefore, is always the same. Rabbits can’t even eat red onions.


If you suspect that your rabbit has ingested onion, garlic, or other similar foods, keep an eye on it in order to detect any symptoms: weakness, dizziness, dizziness. If you are sure that your bunny has eaten some, take It to your trusted vet: they will know what to do.

Final Thoughts

It is important to offer your rabbits a good variety of foods; But make sure not to give them foods that are dangerous to their health, such as onions. Don’t give them even in small quantities: you would only endanger their health, increasing the risk of blood-related diseases, heart problems and leading, in the worst case, to death.

This article is purely informative, at Shelterapet we do not have the right to prescribe veterinary treatments or make any type of diagnosis. We encourage you to take your pet to the vet in case It has any kind of discomfort.

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