If your millipede seems to have stopped eating, the first thing to know is that reduced visible feeding is often normal. Millipedes feed quietly in the substrate, so the main things to check are acclimation, moulting and burrowing rather than the food dish alone.

The quickest way to judge the situation is to look at the enclosure as a whole. In many cases the millipede is hidden, feeding below the surface or settling in after a move. In other cases, a problem such as unsuitable substrate, poor moisture or repeated disturbance is making it less active.

Why your millipede may look like it is not eating

Millipedes are detritivores, so much of their feeding happens in leaf litter, rotting wood and other organic material within the substrate. If the enclosure is set up well, they may eat without ever being seen at the surface.

The most common normal reasons for reduced visible feeding are:

• acclimation to a new enclosure
• burrowing or hiding behaviour
• moulting
• feeding in the substrate rather than from a dish

If your millipede is new and still hiding, see Why Is My New Millipede Hiding?. If you are unsure whether the food itself is suitable, our Best Food for Millipedes guide covers that side of the problem. For warning signs to watch for, see How to Tell if a Millipede Is Healthy.

Where to start

Before changing anything, check the substrate first. Ask whether it is deep enough for burrowing, moist below the surface and rich in leaf litter and decaying organic matter. A millipede may ignore fresh food if the habitat itself is not offering the conditions it needs.

Start with the simplest explanations:

• The millipede may still be settling in.
• It may be hiding or burrowing normally.
• It may be moulting and inactive.
• It may be feeding in the substrate rather than at the surface.

Normal behaviour versus a real problem

Reduced visible feeding is usually not a concern if the millipede is still moving normally at night, burrowing well and keeping a healthy body shape. Many millipedes spend long periods out of sight and only feed in the lower layers of the enclosure.

It becomes more worrying if you see weight loss, obvious weakness, poor posture or a sharp drop in activity. A substrate that smells sour, has turned dry, or has become waterlogged is also a sign that conditions need correcting. In those cases, review moisture, depth and the amount of decaying organic material in the enclosure.

Stable, quiet conditions encourage normal feeding. If the millipede is being handled often, moved around repeatedly or kept in an unsettled setup, it may retreat underground and feed less visibly even if it is otherwise healthy.

Practical checks to make

If your millipede is not eating visibly, keep the response simple and methodical:

• Check that the substrate is deep enough for burrowing.
• Make sure the lower layers are damp, not dry or waterlogged.
• Add or refresh leaf litter and decaying wood if needed.
• Offer suitable fresh food alongside the natural substrate foods.
• Reduce disturbance and give the animal time to settle.

In many cases, these changes are enough to restore normal feeding behaviour. For millipedes, the enclosure itself is a major part of the diet, so the best fix is often to improve the habitat rather than keep changing the food bowl.