dragon treats, dragon treats logo, dragontreats

Can Bearded Dragons Eat Onions?




can bearded dragons eat onions, bearded dragon diet

Affiliate Disclaimer

As an affiliate, we may earn a commission from qualifying purchases. We get commissions for purchases made through links on this website from Amazon and other third parties.

No, bearded dragons cannot eat onions. Onions are toxic to bearded dragons and should be completely avoided in their diet.

Diet is a crucial part of a bearded dragon’s health and longevity. While they are omnivorous, not all fruits, vegetables, and insects are safe for them to consume. One such vegetable is the onion, which is toxic to bearded dragons.


  • Variety is key: Ensure your bearded dragon’s diet consists of a mix of fruits, vegetables, and insects. Foods like squash, carrots, peas, and insects like crickets and mealworms are great choices.
  • Hydrate: Always provide fresh water for your bearded dragon. Although they get most of their hydration from their food, having water available is important.
  • Calcium supplementation: Most bearded dragons need a calcium supplement. This can be done by dusting their food with a calcium powder.


  • Avoid Toxic Foods: Onions, avocado, rhubarb, and other such foods are toxic to bearded dragons and should be avoided.
  • No Large Food Items: Never feed your bearded dragon food items larger than the space between its eyes. Larger food items can lead to choking or digestive issues.
  • Avoid Feeding Wild Insects: Insects caught from the wild can carry parasites and diseases. Always feed store-bought, bred-for-feeding insects.

Best Practices for Feeding Bearded Dragons

Following best practices when feeding your bearded dragon will ensure their safety and overall health. Here are some best practices to keep in mind:

  1. Balanced Diet: Depending on the age of your bearded dragon, their dietary needs will differ. Juvenile bearded dragons require a diet higher in protein due to their rapid growth, so their food should consist of around 70% insects and 30% fruits and vegetables. On the other hand, adult dragons need a diet that is richer in fiber to aid digestion. For them, the ratio should be reversed to 70% fruits and vegetables, 30% insects.
  2. Proper Food Size: The size of the food is vital to prevent choking and digestion issues. As a rule of thumb, never feed your bearded dragon food items that are larger than the space between its eyes. This applies to both insects and pieces of fruits or vegetables.
  3. Feeding Time: Bearded dragons are diurnal creatures, meaning they are most active during the day. Feeding them in the morning allows them to bask and digest their food properly during the day. This also mimics their feeding habits in the wild.
  4. Monitor Weight and Health: Regularly weigh your bearded dragon to ensure they are maintaining a healthy weight. Sudden weight loss or gain could be an indication of health issues. Also, observe their behavior, energy levels, and physical appearance. Lethargy, changes in skin color or texture, and lack of appetite can all be signs of health problems.
  5. Hydration: While bearded dragons get a lot of their water from the foods they eat, providing a shallow dish of fresh water is important. Some bearded dragons may also enjoy a lukewarm bath for additional hydration.
  6. Supplements: Bearded dragons often need supplements to ensure they’re getting all the necessary nutrients. Calcium is particularly important for their bone health. Dust their food with a calcium supplement to make sure they’re getting enough. Additionally, a vitamin D3 supplement is often needed to help them absorb the calcium. However, be aware that too much of a supplement can also be harmful. Always consult with a reptile-savvy vet to establish a proper supplement regimen.
  7. Avoid Toxic Foods: Certain foods are toxic to bearded dragons and should be completely avoided. These include onions, avocados, rhubarb, and fireflies. When introducing a new food to your bearded dragon’s diet, always research to ensure its safety.
  8. Check Food Quality: Whether it’s fruits, vegetables, or insects, always ensure that the food you are providing is fresh and of high quality. Avoid feeding any rotten fruits or vegetables, and only use store-bought insects from reputable sources to avoid any parasites or diseases.
  9. Regular Vet Check-ups: Regular check-ups with a vet experienced with reptiles are a crucial part of a bearded dragon’s care. They can help ensure that your bearded dragon’s diet is meeting its nutritional needs and detect any potential health issues early.

Step-by-Step Guide to Preparing Meals for Your Bearded Dragon

Step 1

Choose the Right Foods: Ensure you are choosing foods appropriate for your bearded dragon’s age and size.

Step 2

Prepare the Vegetables: Thoroughly wash any fruits or vegetables, then cut them into small, manageable pieces.

Step 3

Prepare the Insects: If you’re feeding insects, dust them with a calcium supplement before feeding.

Step 4

Mix the Foods: Mix the insects and vegetables together to encourage your bearded dragon to eat both.

Step 5

Serve the Food: Place the food in a shallow dish and present it to your bearded dragon.

Need Recommendations?

Here’s Our Top Amazon Picks


bearded dragon food, protein

Zilla Omnivore Mix

Ideal For Reptiles Such As Bearded Dragons, Water Dragons, Tegus And Box Turtles


bearded dragon veggie food

Zilla Vegetable Mix

Ideal For Reptiles Such As Bearded Dragons, Water Dragons, Tegus And Box Turtles

Frequently Asked Questions

Can bearded dragons eat onions?

No, onions are not suitable for bearded dragons. Onions contain substances called disulfides and thiosulfinates, which can harm a bearded dragon’s red blood cells and potentially lead to anemia or other health complications. It’s best to entirely avoid feeding your bearded dragon onions.

How often should bearded dragons be fed?

Feeding frequency for bearded dragons depends on their age. Juvenile bearded dragons are rapidly growing and require meals two to three times a day. Adult bearded dragons, on the other hand, only need to be fed once a day, preferably in the morning when they’re most active. Always ensure that their food is properly balanced between plant-based food and insects, as per their age requirements.

What vegetables are safe and beneficial for bearded dragons?

Bearded dragons enjoy a variety of vegetables. Some of the best options include bell peppers, squash, zucchini, peas, and carrots. These vegetables are rich in nutrients and safe for bearded dragons. However, they should always be washed thoroughly and cut into small, manageable pieces to aid in digestion and prevent choking.

Are there any fruits that are toxic to bearded dragons?

Yes, some fruits are toxic to bearded dragons. These include avocados and rhubarb. Both of these foods contain substances that are harmful to bearded dragons and should never be included in their diet. Before introducing any new fruit to your bearded dragon’s diet, it’s always a good idea to thoroughly research its safety and nutritional value.

What other foods should I avoid feeding my bearded dragon?

In addition to onions, avoid feeding your bearded dragon any form of dairy, as they lack the enzyme to break down lactose. Other foods to avoid include raw meat, processed foods, high-fat foods, and high-sugar foods. Some types of insects, like fireflies, are also toxic to bearded dragons.

Can bearded dragons eat cooked vegetables?

While bearded dragons can technically eat cooked vegetables, it’s best to serve them raw. Cooking can reduce the nutritional value of the vegetables, and bearded dragons generally prefer the texture of raw foods. Always finely chop or grate the vegetables to make them easier for your bearded dragon to eat.

How can I tell if my bearded dragon is healthy?

A healthy bearded dragon will have clear, bright eyes, a firm body, and an active demeanor. They should have a good appetite and regular bowel movements. Skin should be smooth without any signs of discoloration or sores. Also, watch for healthy behaviors such as basking, exploring, and reacting to stimuli. Any changes in these signs or behaviors should prompt a visit to a reptile-savvy veterinarian.

Conclusion and final thoughts 💭

Understanding the dietary requirements of your bearded dragon is key to their health and wellbeing. Always remember to feed them a balanced diet of suitable fruits, vegetables, and insects, and avoid harmful foods like onions.

Regular monitoring of your bearded dragon’s health, weight, and behavior is also crucial in catching any potential issues early. By taking these steps, you can ensure your bearded dragon lives a long, happy, and healthy life.

Looking for more? Here’s our roadmap:

General Bearded Dragon Pet Owners Guide

Regular interaction and observation of your bearded dragon are vital for maintaining their well-being. Handling your pet gently and frequently can help build trust and strengthen your bond. Monitor your bearded dragon’s behavior, appetite, and overall health to detect any potential issues early on. If you notice any signs of illness, such as lethargy, loss of appetite, or irregular bowel movements, consult a reptile specialist or veterinarian for guidance. Proper care, feeding, and attention will ensure your bearded dragon remains a happy and healthy companion for years to come.

About the author

Latest posts

  • Can Bearded Dragons Eat Dill?

    Can Bearded Dragons Eat Dill?

    This article will provide the do’s and don’ts. Learn about bearded dragon care, a step-by-step preparation guide, and find answers to frequently asked questions.

    Read more

  • Can Bearded Dragons Eat Mint?

    Can Bearded Dragons Eat Mint?

    This article will provide the do’s and don’ts. Learn about bearded dragon care, a step-by-step preparation guide, and find answers to frequently asked questions.

    Read more