Can Rabbits Eat Lettuce? Benefits and Risks of Feeding Lettuce to Rabbits

Dr. Kathryn Rosalie Dench

Written by: Dr. Kathryn Rosalie Dench

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can rabbits eat lettuce

Rabbits love eating fresh greens, and lettuce is one of the greens they will gladly munch on the moment you give them. But when it comes to this common vegetable in our kitchen, you may find yourself wondering if rabbits can eat lettuce?

The short answer is that for most types of lettuce, you can give moderate amounts to your rabbit. But some varieties actually contain a chemical, referred to as “lettuce opium” which can have dramatic effects on your pet rabbit.

Intrigued? Read on! In this article, we’ll bust the myths about rabbits and lettuce, and tell you exactly what the risks and benefits are, and how to safely feed lettuce to your pet bunnies.

Can Rabbits Eat Lettuce?

Both wild and pet rabbits love eating fresh greens, and lettuce is one of the leafy greens they love to chew on. However, it is good to know the differences between the different lettuce varieties, as not every type is good for your pet rabbit’s consumption. Some lettuce varieties contain high levels of a chemical called lactucarium which isn’t good for rabbits.

Feeding Lettuce to Rabbits

Health Benefits and Risks of Feeding Lettuce to Rabbits

The darker green lettuce varieties like cos lettuce, red leaf lettuce, butterhead lettuce, and lambs lettuce can provide good amounts of vitamin A and vitamin K, vitamin E, iron, calcium, folic acid, and potassium.

  • Vitamin A is essential for bone development and immune response.
  • Vitamin K helps in blood clotting.
  • Vitamin E is an anti-inflammatory agent and helps improve reproduction deficiency.
  • Iron is important for blood cell production.
  • Calcium is essential for teeth and bone development.
  • Potassium helps manage a rabbit’s heart rate.
  • Folic acid enhances red blood cell production, which in turn prevents rabbits from developing anemia.
Health Benefits and Risks of Feeding Lettuce to Rabbits

Lettuce also has high water content and fiber that help in digestion. Since it is low in calories, you can offer it to your rabbit without worrying about them gaining weight.

What are the risks of feeding lettuce to rabbits?

Some varieties of lettuce contain lactucarium, or “lettuce opium”, which causes drowsiness and hallucinations in animals. 

Therefore, you should be careful not to give too much lettuce to your pet rabbit. Remember, your rabbit’s diet should consist of good-quality hay, fresh water, fresh vegetables, and pellets.

Also, feeding your pet rabbit iceberg lettuce (a light-colored lettuce variety) can be dangerous as it has a high water content that could cause diarrhea besides not having much nutritional content for your rabbit.

How to Feed Lettuce to Your Rabbit

When you are introducing your bunny to a new food type, it is important to offer it gradually so as not to upset its stomach.

Choose organic lettuce that’s free of pesticides, and ensure you wash your lettuce before offering it to your rabbit.

Shred the leaves into smaller pieces and offer them together with other vegetables. Lastly, monitor your bunny for any signs of discomfort or adverse reactions.

How to Wash Romaine Lettuce

How much lettuce should you feed your rabbit?

While lettuce can be a part of a rabbit’s diet, you should only offer it in moderation. A couple of tablespoons of shredded lettuce every other day is plenty.

Your rabbit’s diet should consist of plenty of hay (80%), a variety of fresh leafy greens, and limited amounts of pellets to ensure a well-rounded and nutritionally complete diet. Lettuce should constitute only a small portion of a rabbit’s overall vegetable intake.

It is also wise to offer lettuce together with other rabbit food like other leafy greens like spinach, and cabbage, so that your rabbits don’t miss out on vitamins and nutrients from other foods.

Varieties of Lettuce that Rabbits Can and Can’t Eat

When it comes to lettuce varieties, the following are usually alright to include in your bunny’s diet:

  • Butterhead
  • Cos
  • Red leaf lettuce
  • Lamb’s lettuce

Lighter lettuce varieties like iceberg lettuce shouldn’t be given to rabbits as they contain lactucurium which can be fatal to bunnies.

Can rabbits eat butter lettuce?

Butterhead lettuce, also known as butter lettuce, is generally safe for rabbits but should be offered sparingly to avoid digestive disturbances. It comes in two forms: Boston and Bibb lettuce

  • Boston lettuce – Boston lettuce has loose, tender leaves that are easy for rabbits to chew and digest.
  • Bibb lettuce – has a sweet taste and a buttery flavor that rabbits enjoy

Butter lettuce contains high water content that can help keep your rabbit hydrated, while the high fiber content in the butter lettuce helps keep your rabbit’s gut working properly. In addition, butter lettuce contains antioxidants that help fight free radicals.

Butterhead lettuce

However, butterhead lettuce is high in acids, making it unsafe to feed your bunny in large amounts or on a daily basis. Therefore, it is safe only to offer it in small amounts as an occasional treat, say, once or twice a month.

Can rabbits eat romaine lettuce?

Cos lettuce or romaine lettuce has high fiber content and nutrients that your bunny will benefit from. Romaine lettuce contains a reasonably low water content and high fiber, making it a welcomed addition to your rabbit’s diet. 

Romaine lettuce also contains relatively low amounts of lactucarium, which means you give it to your rabbit without worrying about unwanted effects.

Still, you have to ensure you feed your rabbit lettuce only in moderation, and when first introducing it, ensure you do it gradually as your bunny has a sensitive tummy.

Can rabbits eat romaine lettuce

What about romaine lettuce stalks? There aren’t a lot of nutrients in a romaine lettuce stem or stalk that will benefit your rabbit. The stem only contains calories and lactucarium, which your bunny doesn’t really need.

Can rabbits eat lamb’s lettuce?

Lamb’s lettuce or corn salad gets its name from having the shape of a lamb’s tongue. It is a dark leaf lettuce that few rabbits enjoy due to its tangy, nutty flavor. It is also rich in beta-carotene, omegas, and calories.

Can rabbits eat red-leaf lettuce?

This dark green leaf lettuce variety called is safe for your rabbit to enjoy in moderation. This lettuce variety has distinct reddish-purple tips and looks like romaine lettuce. It also contains beneficial amounts of magnesium and potassium plus has an abundance of vitamin K which is good for your rabbit’s immune system and blood clotting.

However, you should note that red lettuce is very hydrating, and you should offer it to your rabbit in moderation to not destabilize your bunny’s sensitive digestive system.

Can rabbits eat green leaf lettuce?

Green leaf lettuce is safe for rabbits. It is a perfectly healthy treat thanks to its low-calorie content. It is also a good source of vitamins, but you should ensure that you give it in moderation because too much will cause your rabbit to have diarrhea.

Can rabbits eat iceberg lettuce?

The short answer is no.

Iceberg lettuce is a light-colored, crispy head lettuce variety. This lettuce contains lactucarium (a milky liquid) that causes lethargy and has very little nutritional value. Although lactucarium is not dangerous in small quantities, wild bunnies and pet rabbits may get diarrhea and stomach cramps.

Since rabbits enjoy eating lettuce, if a piece of Iceberg lettuce manages to sneak in with other human foods that rabbits can eat, your pet bunny will gladly eat it. Don’t panic. Instead, keep an eye out for symptoms of distress and offer hay and fresh water.

Hay is high in fiber and will correct digestive issues your bunny may have. However, your bunny could also be at risk of developing GI stasis when food lingers in the digestive system and ferments.

Can rabbits eat iceberg lettuce

Is your bunny not eating? Is it having difficulty pooping? This could indicate your bunny has developed GI stasis. It is wise to consult your vet, so they can evaluate your bunny’s health, as this condition can be fatal.

Another reason why iceberg lettuce must not be given to bunnies is that this type of lettuce lacks the fiber that rabbits need to grind their teeth down.


Can baby rabbits eat lettuce?

Although baby rabbits start nibbling on pellets and hay once they are 3 weeks old, you can confidently start giving them other food varieties like lettuce or Brussels sprouts once they are twelve weeks or older.

Can rabbits eat wild lettuce?

Wild lettuce contains a high amount of lactucarium or “lettuce opium,” which means it is unsuitable for rabbits.

How many times a day should you give your bunny lettuce?

How many times a day should you give your bunny lettuce

You should offer shredded lettuce to your rabbit once a day or less, and offer alternative green veggies on some days. 

Your rabbit should eat Timothy hay or grass hay, small amounts of pellets, and different leafy greens, so they can reap maximum benefits from the variety and assorted tastes to enjoy.

What makes light green lettuce unsuitable for rabbits?

Light green lettuce has no nutritional content, contains lactucarium, and has zero fiber, making it unsuitable for rabbits.

Bottom Line: Are Lettuces Good for Rabbits?

There are many varieties of lettuce, and not all of them are a great snack addition to your rabbit’s diet. Since a rabbit’s digestive system is very sensitive, introduce new foods like lettuce in moderation so as not to cause your pet any harm. Once you have offered a dark lettuce variety, watch your bunny’s reaction. Always consult your vet if you aren’t sure about your rabbit’s diet or its reaction to a new food.

Did you enjoy reading this article? Share it with your friends, so they can also learn about safe and unsafe lettuce varieties for rabbits.

Dr. Kathryn Rosalie Dench


Dr. Kathryn Rosalie Dench is a veterinary surgeon qualified from Cambridge University. Kate takes a science-based approach to her recommendations for rabbit care. She draws on over ten years of experience in veterinary clinics to offer practical tips, tricks, and warnings for rabbit owners the world over, to help pet rabbits live happy and healthy lives.

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