Can Crested Geckos Eat Butterworms?

Can a Crested Gecko Eat Butterworms?

As a treat, yes — but butterworms should never be a staple for a crested gecko.

Butterworms are the larvae of the Chilean moth Chilecomadia moorei, and they are a rich feeder by any measure: roughly 25–30% fat and 16–18% protein.

That fat is the whole story. It makes them a dense energy source — genuinely useful for an animal that is underweight, recovering, or refusing other food — and it makes them a fast route to obesity for an animal that is doing fine. They also carry more calcium than most treat feeders, which is a point in their favour, but not enough of one to move them out of the treat category.

The useful comparison: waxworms occupy the same role. Black soldier fly larvae are the opposite — the feeder you build a diet on.

Why This Verdict for a Crested Gecko

A crested gecko on a good prepared diet needs very little else, and butterworms are the richest thing you could add.

When a High-Fat Feeder Is the Right Answer

Rich feeders have a real job, and it is worth naming because "treat only" gets read as "never useful":

• An animal that is underweight and needs condition back on
• A recovering animal, or one coming off illness or a failed shed cycle
• A fussy eater — butterworms are often taken when nothing else is
• Getting medication or supplement into an animal that refuses everything else

What they are not is a staple. Build the diet on something with a working calcium-to-phosphorus ratio and use this for the jobs above.

More in the feeder comparison guide.

Feeding is one part of it. The rest is in the crested gecko enclosure setup guide.