What is an acorn? We have all seen acorns associated with squirrels, and squirrels enjoy acorns as their favorite food. But have you ever wondered if rabbits can eat acorns?

You might have thought that acorns grow on acorn trees, right? Well, you’re not wrong, but the tree’s acorns do not share their name.

Those trees are actually called oak trees! Different species of oak will produce different types of acorns. But how does this tie back into rabbits eating acorns? Here’s how.

Oak trees and their leaves are toxic to rabbits, and rabbits should not be allowed to feed on them. As for acorns, it is the same for these nuts as well. Acorns, while being a major food source for other animals and even some birds, are toxic for rabbits, the same as the tree they grow on.

Acorns, just like oak twigs and leaves, are toxic to rabbits and should not be fed to them. It is highly acidic for a rabbit’s digestive system and, as such, can be a cause of some severe issues, like potentially lethal liver disease.

Acorns are also unhealthy for rabbits since they have a high-fat content.

What are the risks to a rabbit from eating acorns? What can you do if a rabbit eats acorns? How can you prevent it? All the answers will be down below as usual. So, like always, go down the rabbit hole and find the answers to your questions.

Can Rabbits Eat Acorns

Are Acorns Toxic To Rabbits?

Are Acorns Toxic To Rabbits

Simply put, yes. Acorns are toxic to rabbits, just as oak leaves and oak branches and twigs are toxic to rabbits.

But while you should never let your bunny eat oak leaves and branches, if your bunny eats one acorn every few weeks or so, then it should be fine, although even in that case you should consult your veterinarian and your rabbit’s health before deciding that.

But what is the reason why acorns are toxic to rabbits? The reason acorns are toxic to rabbits is because of the high amounts of tannin they contain.

Tannins usually cause an upset stomach in rabbits, and if your rabbit does end up eating an acorn, keep an eye out for this.

Acorns, like most other nuts, have a high carbohydrate content of 40.75 g per 100g and high-fat content of 23.85 g per 100g. Rabbit diets should be low in carbs, high in fiber, and contain 1-3 percent total fat.

Excess carbohydrate consumption may produce a shift in microflora organisms, resulting in digestive issues, diarrhea, gas, and bloating.

They may also induce weight gain and interfere with regular food flow in the digestive tract. Why else would you persist in providing them to your animal companions?

Foods heavy in fat, on the other hand, may produce obesity, hepatic lipidosis, GI distress, and aortic atherosclerosis.

Risks Of Feeding Acorns To Rabbits

Risks Of Feeding Acorns To Rabbits

A rabbit’s digestive tract lacks a cecum and an appendix, making it difficult for the rabbit to get nutrition from plants other than grasses and weeds.

And due to this, rabbits require more fiber than simply grass and hay, but they are unable to digest high-fiber diets like vegetables or grains on their own because they lack the enzymes required to break these things down.

Now that you know why rabbits should not eat acorns, let’s dive into the risks of letting a rabbit eat acorns.

One of the most serious issues is that acorns are naturally high in tannins. Tannins can induce stomach distress when consumed. If you believe your rabbit has eaten any amount of acorn, keep an eye out for indications of an upset stomach.

1. Fibrosis Of The Liver (Or Fatty Liver Disease)

Because most acorns are heavy in fat, feeding them to your rabbits on a regular basis may result in hepatic lipidosis, often known as fatty liver disease. A rabbit’s diet should have less than 3% fat. Acorns, on the other hand, are loaded with fat.

The following are symptoms of fatty liver disease caused by excess fat in your rabbit:

  • Appetite loss (anorexia) can be abrupt or gradual.
  • Loss of weight
  • Droppings are becoming fewer and larger (feces)
  • Dehydration
  • Depression and sluggishness

2. Diarrhea

Diarrhea in rabbits is frequently induced by a poor diet or a rapid change in food. Feeding your rabbit acorns would satisfy both of the conditions I mentioned.

3. Gastrointestinal Stasis (GI Stasis)

Gastrointestinal stasis is also conceivable when a rabbit is fed a high-fat diet of acorns. When a rabbit is fed a low-fiber diet, GI stasis develops. When the equilibrium of microorganisms in your rabbit’s stomach is upset, GI stasis occurs. If not addressed quickly, this disturbance would result in uncomfortable gas, which would eventually lead to organ failure and death.

The following are symptoms of GI stasis:

  • Depressed
  • Hunched position
  • Bruxism
  • Appetite decrease/anorexia

If you observe any of these symptoms, take your rabbit to a veterinarian right away.

4. Uneaten Cecotropes

Soft uneaten cecotropes are also conceivable when rabbits consume acorns instead of hay in big quantities. Because of the absence of fiber in your rabbit’s diet, this might result in softer cecotropes.

5. Obesity

Obesity in rabbits is also conceivable if they are fed a lot of starchy diets. Obesity is particularly common among rabbits that are kept in cages all day without exercise and fed high-carb, low-fiber diets.

What to Do If Your Rabbit Eats an Acorn?

What To Do If Your Rabbit Eats An Acorn

Acorn poisoning can occur in rabbits that consume acorns. The tannins present in acorns induce this. Tannins are natural substances that can harm rabbits’ livers and cause other health issues.

Eating even a tiny amount of acorn can lead rabbits to get quite unwell and, in rare cases, die.

A rabbit can absorb enough tannin to cause injury from as little as 10g of uncooked acorns. Acorns also have very little protein and fiber, making them unsuitable for rabbit consumption.

They should never be provided to rabbits as a reward or in high enough quantities to induce toxicity.

Acorns will not hurt your rabbit if fed once, but if fed frequently, you may notice that their feces have become quite loose and stinky. If your rabbit consumes acorns or any other nuts, keep an eye out for any indications of sickness, such as diarrhea, vomiting, and a loss of appetite.

But if your rabbit exhibits any of these symptoms, the best thing to do is to get them to a vet as soon as possible. If left untreated, your rabbit may suffer potentially deadly liver damage, necessitating supportive treatment such as fluid therapy and possibly blood transfusions.

In some cases, symptoms might persist for up to a week, although you should see relief within the first 24 hours after eating the acorns. But seeing a veterinarian is still recommended.

Some things that you as the owner can do on your own is to take care of your rabbit and feed them a lot of hay as the fiber in the hay would definitely help balance out the nutrients and food in their gut.

Another thing you can do is keep an eye on your bunny for any changes in its behavior and any changes in its poop. If you do notice any changes, you should consult a vet as soon as possible.

How To Prevent Rabbits From Consuming Acorns

You can do a few things to keep your rabbit from eating acorns.

  • First, attempt to keep your yard clean and acorn-free.
  • Second, ensure that your rabbit is eating a portion of nutritious food and is not deficient in any important elements.
  • Third, give your rabbit plenty of diversions to keep them engaged.
  • Finally, if everything else fails, your rabbit can be immunized against oak toxicity.
  • There are vaccines available for both domestic and wild rabbits. If you have indoor/outdoor rabbits, see your veterinarian about protecting them from oak toxicity.
  • Even if you do not live in an area where acorns are plentiful, it is vital to safeguard your rabbit from any unexpected risks. The best remedy is prevention.
  • The most important thing you can do to protect your rabbit from acorns is to ensure that they are not deficient in any key nutrients. Rabbits should constantly be fed a good, nutritious diet that includes hay, vegetables, and freshwater. Make sure kids get plenty of exercise to avoid becoming fat or overweight.
  • Rabbits that are deficient in vital nutrients may seek alternative food sources, such as acorns.
  • If your rabbit appears to be interested in acorns (or anything else), make careful to discourage this tendency. If you notice your rabbit munching acorns, attempt to divert them right away to keep them engaged.
  • Water bottles with hay, fresh vegetables, and other distractions can keep your rabbit occupied until the acorn hunger subsides.

Frequently Asked Questions

Is There a Healthy Alternative to Acorn Treats?

Acorns, which are a good source of nutrients for wildlife, are produced by oak trees. Acorns, on the other hand, are not a good dietary option for rabbits. While they may love nibbling on the odd acorn, tannins in acorns can make them unwell. Acorns are not the only healthy choice that rabbits may enjoy as treats. Fresh vegetables, sliced fruit, and specially designed rabbit snacks are all terrific possibilities.

Should You Be Concerned If Your Rabbit Consumes A Small Amount Of Acorn?

Although acorns are not suggested for rabbits, they are not harmful. It’s only that acorns are strong in fat and starch, both of which rabbits cannot digest effectively. If you’re concerned, simply feed them a bunch of hay. The extra fiber would very certainly solve the problem on its own.


While acorns are not poisonous to rabbits, they are definitely not something that you want your rabbit to munch on frequently.

Acorns should not be consumed in large quantities by rabbits since the tannins in acorns can induce gastrointestinal issues in rabbits.

Make sure that the majority of your rabbit’s diet consists of hay, fresh vegetables, and a modest quantity of rabbit-specific pellets.

And if you are sure that your rabbit can handle some non-healthy food, then you can let your little bunny have a go at an acorn once in a while just as an incredibly rare treat. You don’t want your rabbit falling sick now, do you?


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