Yes, bearded dragons can eat butter lettuce.
Butter lettuce is healthy for bearded dragons, as well as other kinds of lizards.
Butter lettuce contains vitamin A, magnesium, folate, iron, potassium, and calcium. There are 6 grams of sugar in a head of butter lettuce. Butter lettuce also has dietary fiber.
Additionally, it does not have any cholesterol or saturated fat.
The only unhealthy part of the butter lettuce is a large amount of water in it. This can cause certain problems for your lizard, depending on how much they ingest. Some lizards will opt to not eat if there is too much water in their food.
Butter lettuce also contains oxalic acid, which prevents calcium absorption by the body. This can be dangerous for bearded dragons, as they need calcium to help build strong bones and support their bodies.
Butter lettuce only has small amounts of oxalic acid, so it is still safe to eat in moderation.
While it won’t harm your lizard if they have too much butter lettuce, you will want to make sure they are eating other sources of calcium too.
Also, the oxalic acid will give warts or blisters to bearded dragons if they have an allergic reaction to it. This is not common in most reptiles but can lead to problems if your lizard does get a bad reaction.
This means you should never feed them butter lettuce if they have a history of warts on their body or blisters.
Overall, butter lettuce is healthy for bearded dragons.