Can Bearded Dragons Eat Onions? (Explained)

Its good to do your research before feeding anything to your bearded dragon. Because some food are extremely toxic to bearded dragons. If you are wondering if you can feed your beardie an onion here is the answer for you.

No, bearded dragons cannot eat onions. Because Onions are extremely toxic to bearded dragons and can cause serious health problems, such as diarrhea and vomiting. Whether raw, dehydrated or cooked, onions should never be fed to bearded dragons.

Why Bearded Dragons Should Never be Allowed to Eat Onions?

Bearded dragons cannot decide for themselves which foods are good and which ones are harmful. As a bearded dragon owner, it is your responsibility to feed them healthy food.

Onions are toxic to bearded dragons because of their high acid content. A bearded dragon’s digestive system can’t handle this type of acidity. Beardies can get severe stomach upset and irritation from eating acidic foods like onions and citrus fruits.

In addition to being acidic, onions have a high calcium-to-phosphorus ratio, which isn’t good for dragons. The amount of phosphorus in onions is significantly higher than the amount of calcium.

There should be a 2:1 ratio of calcium to phosphorus in the diet of bearded dragons.

What to Do if Your Bearded Dragon Accidently Eat Onions?


Despite knowing the dangers of feeding onions to bearded dragons, there is always the possibility of accidentally feeding onions to them. Let’s say a family member unintentionally does it.

In this situation, watch for any signs of digestive problems in your pet.

If you notice anything out of the ordinary, you should definitely take your pet to the vet at the earliest opportunity.

Other Toxic Foods to Avoid

  • Citrus Fruit- Bearded dragons can’t digest citrus fruits like oranges, lemons, and limes because they’re highly acidic.
  • Rhubarb- There’s a lot of oxalic acid in rhubarb, which can lead to calcium deficiency. Calcium deficiency can lead to MBD, a deadly disease in beardies.
  • Avocado- A fungicide in avocados, is toxic to lizards, even in small amounts.
  • Iceberg Lettuce – A bearded dragon shouldn’t eat iceberg lettuce because it’s so watery and low in nutrition.
  • Spinach- Spinach, like rhubarb, is high in oxalic acid, which depletes calcium and can cause calcium deficiency that could lead to MBD.

For a complete list of food that you can and cannot feed your bearded dragon, please visit our diet page for beardie.

Can Bearded Dragons Eat Green Onion?

Bearded dragons should not be fed green onion either because it can also cause digestive problems and other health issues. Green onion is not a natural part of a bearded dragon’s diet, and they do not have the digestive system necessary to process it properly.

Can Bearded Dragons Eat Red Onions?

No, bearded dragons should not eat red onions. Red onions, along with other types of onions, can cause digestive issues and anemia in bearded dragons. It is best to stick to vegetables and fruits that are safe for bearded dragons.

Can Bearded Dragons Eat Purple Onions?

No, bearded dragons should not eat purple onions. Onions, including purple onions, are part of the allium family, which can be toxic to reptiles. Ingesting onions can cause digestive issues and potentially lead to more serious health problems.

Can Bearded Dragons Eat White Onions?

No, bearded dragons should not eat white onions. Onions are a member of the Allium family, which can cause gastrointestinal upset and hemolytic anemia in reptiles. It is best to avoid feeding bearded dragons any type of onion, including white onions.

Can Bearded Dragons Eat Spring Onions?

No, bearded dragons should not eat spring onions as they are members of the onion family and can cause digestive issues and other health problems for bearded dragons.

Can Bearded Dragons Eat Yellow Onions?

No, bearded dragons should not eat yellow onions. These vegetables contain compounds that can be toxic to reptiles, and can lead to many health issues.

Filled under: Lizards

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