Can Rabbits Eat Onions? All You Need To Know

A lot of people ask this kind of inquiry. Can rabbits eat onions? Many people question whether rabbits can eat onions since they are often seen in kitchens where food is prepared. However, are they as good for our rabbits as they are for us?

Before feeding our rabbits onions, we need to learn more about them. Our rabbits need a diversified diet, but it’s equally crucial that we don’t offer them the incorrect food. All sorts of foods benefit from the delicious taste of onions. They may be an excellent addition to salads and sandwiches as a basic component.

As a fan of onions, you may question whether you share them with your pet. It’s about time we answered these two often asked questions about onions for rabbits: Rabbits can eat onions, right? If this is the case, how much and how often may they consume them? Let us show you why onions should be on your rabbit’s “danger” list because we’re going to reveal all we know about onions for rabbits.

Can Rabbits Eat Onions?

No, Rabbits may be poisoned by onion, despite the many health advantages they provide. As a result, rabbits should not be allowed to consume them. Onions poisons rabbits. Thus they should never be given them.

Can Rabbits eat onions

Even in the wild, rabbits tend to avoid them because of their stench, but they may also attempt to eat them if there is nothing else to eat. 

Avoid leaving any onion or onion bits lying about in your kitchen, especially if your rabbit has access to them. The family of plants that includes onions should be kept out of reach of children.

Onions Nutritional Stats

A 3.5-ounce serving of raw onions has 40 calories (100 grams). They are mostly water, carbohydrates, and dietary fiber, with just trace quantities of protein and fat present in their raw form. In 100 grams of raw onions, you’ll find the following nutrients:

Onions in box
  • Calories in per serving: 40
  • 1.1 grams of protein
  • 9.3 grams of carbohydrates
  • 4.2 grams of sugar
  • 1.7 grams of fiber
  • 0.1 grams of fat


Both raw and cooked onions contain 9–10% carbs. The majority of their makeup is made up of glucose, fructose, sucrose, and fiber. A 3.5-ounce (100-gram) serving has 9.3 grams of carbohydrates and 1.7 grams of fiber for a total carbohydrate value of 7.6 grams.


According to the kind of onion, fiber may range from 0.9% to 2.6% of the fresh onion’s weight. Known as fructans, they are an excellent source of soluble fiber. Onions are a major source of fructans in the diet. It is a prebiotic fiber that feeds the good bacteria in your intestines.

SCFAs like butyrate, which is formed in this process, may help to enhance colon health, decrease inflammation, and lower your chance of developing colon cancer.

If you have irritable bowel syndrome (IBS), it’s possible that fructans, which are classified FODMAPs, might induce unpleasant digestive symptoms.

Why Do Rabbits Hate Onions?

Allium family plants, such as onions, garlic, and chives, are poisonous to rabbits and many other animals. They’re usually avoided since they’re unpleasant to eat.

Hemolytic anemia may occur in rabbits if the onion is consumed. It is a blood disorder that might cause your rabbit to become frail and disoriented due to losing red cells. 

Severe anemia and even death are possible outcomes in extreme situations. Toxicology studies show that onions may also affect the rabbit’s immune system by reducing its ability to fight infection. Bunnies may be allergic to them as well.

Our rabbits should never be fed onions or other herbs from the onion family, such as garlic, because of these reasons. 

What Are Other Healthy Alternatives To Onion In A Rabbit’s Diet?

It’s a great relief to find out whether onions are okay for rabbits before giving them to your furry friend. Instead, here is a list of healthier alternatives:

Rabbit, Food, Eat, Eating, Hare, Bunny
  • Carrot
  • The tips of the carrots
  • Beets
  • Tops of beet
  • Kale \Basil

Only the beginning has been covered here. Many vegetables, fruits, and herbs are suitable for rabbits to consume, and many of them are likely to be a hit with your pet!

Remember to do your homework on each new meal you want to give your rabbit. 

It is the greatest method available to prevent contaminants and ensure that you provide healthful snacks in the correct amount sizes. Using them will only hurt rabbits and increase their risk of significant health issues.

How Many Onions Can A Rabbits Eat?

None! Never offer a rabbit onion. Give an adult rabbit five onion leaves, but not a newborn rabbit.

Your rabbit should be sent to the clinic immediately if it consumes any quantity of onion, no matter how little.

We’re not here to scare you, but if you don’t get immediate medical attention, your rabbit might die.

How Often Can A Rabbits Eat Onions?

To address this widespread issue concerning onions for rabbits, we decided to do so. We’re quite confident you’ve figured it out already. Never. Attempting to feed a rabbit an onion is a bad idea.

How Do Rabbits Show Signs of Onion Toxicity?

Observing the rabbit’s behavior is the only method to determine whether or not it has eaten onions, whether on purpose or by mistake. 

  • Fainting and collapsing, excessive salivation, pale gums, and scarlet urine are just some of the symptoms.
  • Other symptoms such as an elevated heart rate, panting and vomiting. 

If you observe any of these symptoms, you should take your pet to the veterinarian as soon as possible to prevent the situation. Your vet will use your rabbit’s symptoms and lab results symptoms and lab results will be used by your vet to diagnose their ailment. 

Suppose your veterinarian finds hemolytic anemia or any Heinz bodies in your rabbit and knows that it has just been exposed to vegetables. In that case, they will undoubtedly infer that onion poisoning is to blame.

It’s important to remember that several things might cause your rabbits’ hemolytic anemia. It’s important to get your pet evaluated and diagnosed correctly for the proper treatment and medication.

Can rabbits eat green Onions?

No, Rabbits can’t eat Green Onions. Rabbits can consume some fruits and vegetables, or parts of them, under certain circumstances, but what about green onions? Green onions are just onions that have not yet matured. 

The bulb is plucked out of the ground before it is ready, so it hasn’t had a chance to grow fully, but that doesn’t imply it lacks the same compounds as mature onions. 

It may have a lower concentration of those compounds, but it still has them, making it a no-no on green onions.

What is the perfect diet for a rabbit?

You might be asking what rabbits should consume as part of a healthy diet because onions aren’t on the menu. There’s good news! Instead of onion, they can eat a variety of healthy meals.

Feeding your pet rabbit a diet that closely resembles a wild rabbit is recommended. Rabbits consume a variety of low-growing plants in the wild, usually grasses.

Dwarf Rabbit, Color Dwarf

The digestive tract of a rabbit has been created particularly for this diet. The grasses’ long fibers keep your rabbit’s digestive system going.

Here are our ideas for feeding your rabbit the proper way, every day, with your rabbit’s health in mind:

  • The most significant feeding source for a bunny rabbit is fresh hay. Not only does the fiber keep your rabbit’s digestive tract moving, but all of that beautiful nibbling keeps rabbit teeth from growing overgrown. Always have fresh rabbit hay on hand.
  • Rabbit food of superior grade. Because various manufacturers recommend varying serving sizes, check the label to discover how much rabbit food your bunny should consume daily. Some of my favorites include pumpkin seeds, unsalted pepitas, and sunflower seeds.
  • Clean, fresh water – at least once a day, take time to rinse and replenish your rabbit’s drinking bottle. Your rabbit requires water 24 hours a day, seven days a week.
  • A cup of fresh leafy greens for two pounds of body weight of your rabbit, plus a few crunchy veggies to nibble. Fruits and vegetables are natural delights. 
  • Limit your rabbit’s fruit intake to around a teaspoon per two pounds of body weight.

There’s one more item we’d like to mention: your bunny’s dental care. There’s good news! Your rabbit’s teeth do not need to be brushed. You need to ensure that kids have access to safe, chewable items at all times.

Can rabbits like onions?

Because it is one of the most popular veggies or herbs, you may be concerned that your rabbit may obtain it.  It might help if you weren’t too anxious because rabbits detest the aromatic or strong odor of onions and other Allium species.


Alliums are rabbit-resistant or repellent plants that even wild rabbits will avoid. Some individuals even use their oil sprays to keep rabbits from their crops.

While it is obvious that rabbits dislike them, please don’t rule out the possibility that they would nibble on onions, particularly your domestic rabbit. As a result, please keep them in areas where they can’t get to them.

Finally, if you have them in your garden, try fencing them out or using some of the most humane and effective rabbit repellents or deterrents. Use no dangerous or chemical repellents since they will injure or kill your rabbit.

Can onions make my rabbit sick?

Yes, onions are poisonous to rabbits and cause major health problems such as hemolytic anemia and anaphylactic shock. 

Both of these problems can be fatal if not addressed right away. If your rabbit has inadvertently consumed any onion, contact your veterinarian right away to discuss your options.

Can rabbits eat red onions?

Unfortunately, red onions are identical to white onions. Therefore it makes no difference. 

Red onions contain varying proportions of beneficial and harmful compounds, nutrients, and minerals, yet they are hazardous to rabbits and should never be served to them.

Can rabbits eat raw onions?

Although onions and garlic have numerous alleged medical properties, they should not be offered to rabbits. 

Onions and garlic immunosuppress rabbits and may also develop an allergic response. Instead, see Vegetables and Treats for safe things to feed your rabbit.

Do rabbits consume peas?

Yes. Rabbits may eat peas, but they must be fresh and still green. They are not harmful to your pet. However, avoid giving them dried ones as the latter can cause intestinal blockages.

Green Peas

What happens if a rabbit eats onion?

When consumed, onion can induce hemolytic anemia in rabbits. This blood disorder causes red cell loss, which might cause your rabbit to become frail and disoriented. Extreme anemia and even death can result in difficult situations.

Can rabbits eat garlic?

Some bunny owners will tell you that garlic is terrible for rabbits, and although it is true that in excessive quantities, it may be poisonous, as can most bulbs, others and doctors believe that garlic may be good for the health of little doses some bunnies.

Clove of Garlic

We do not advocate using garlic or garlic pills on your beloved rabbit. You do so at your own risk. It might harm rabbits’ health. Only a veterinarian can tell you if this is essential if your rabbit has parasites or atherosclerosis. 

He is the one who will inform you whether or not it is okay to feed it to your beloved rabbit. So don’t go at it alone. Better to be cautious than sorry.

Final Thoughts

It’s crucial to provide your rabbit with a variety of foods and treats, but never serve him onions or any other onion component, no matter how little, since this can only injure him and bring him associated blood ailments, other major health issues, and even death in extreme circumstances.


Can rabbits eat green onions?

No. Green onions are just as poisonous to rabbits as full-grown onions.

Can rabbits eat onions and tomatoes?

No, rabbits can’t eat onions, but yes, they can eat tomatoes. but only as a treat. Except for the leaves, vines, flowers, and stems, poisonous to rabbits, the fruit is not harmful.

Can rabbits eat spring onions?

Spring onions, or any onions for that matter, are not suitable for rabbit consumption. The leaves, stem, bulb, and other components of the onion are all poisonous to rabbits.

Can rabbits eat beansprouts?

Rabbits can consume bean sprouts, especially mung bean sprouts, like eating leaves or plants. However, it would be great to consume them in moderation to avoid the different gastrointestinal disorders we have highlighted, such as gas, bloating, and diarrhea.

About the author

I'm Gulshan, a passionate pet enthusiast. Dive into my world where I share tips, stories, and snapshots of my animal adventures. Here, pets are more than just animals; they're heartbeats that enrich our lives. Join our journey!