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When a centipede runs its mouthparts along an antenna, the motion can look exactly like chewing. It is normally antenna grooming, also called antenna cleaning: the centipede scrapes the antenna from its base toward the tip with its mouthparts. It is not eating, biting off, or digesting its own antenna.
The behavior has been formally recorded in captive scolopendromorph centipedes. A 2016 behavioral study categorized the movement as antenna cleaning, while a 2024 natural-history account documented similar grooming in another species. Those observations explain the unsettling video without requiring self-cannibalism.
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What the centipede is doing
The apparent “eating” is a grooming stroke. The centipede brings its head appendages to an antenna and draws them along the antenna’s length, often repeating the motion several times. Because the action happens directly beside the jaws, it resembles feeding when viewed in a short clip.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchGuizze and colleagues gave the behavior a precise definition in their 2016 study of three South American scolopendromorphs: Scolopendra viridicornis, Otostigmus tibialis and Cryptops iheringi. Their category reads: “Antennae cleaning (La) – scraping movement of mouthparts on the antennae (from base to distal end).” You can read the full study in Zoologia.
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That wording matters. It identifies the action by its direction and mechanics, not by an assumption that the animal is consuming anything. A centipede can use mouthparts in maintenance behavior just as many other animals use their mouths, claws or limbs to clean themselves.
Why the movement looks like chewing
Centipedes have a compact cluster of head appendages around the mouth. When those appendages contact an antenna, the animal’s head rocks and the mouthparts move in short, scraping strokes. A video enlarged on a phone or played in slow motion can make the scraping look like the centipede is taking bites.
Grooming also tends to be methodical. A stroke can begin near the antenna’s base and travel toward its distal end, then start again. The repeated base-to-tip pattern is different from tearing tissue away. In a feeding sequence, the prey is normally seized, restrained and manipulated as an object; during antenna cleaning, the centipede is working on an appendage that remains attached and follows the head’s movements.
The “mint-legged centipede” featured in the article associated with this viral-looking scene is presented as grooming its antennae, but that article does not independently establish the animal’s species. The primary behavioral study likewise cannot identify the species in a separate online video. A visual resemblance is not a taxonomic confirmation.
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What the 2016 study actually observed
The Guizze study was designed around predatory behavior rather than a survey of grooming across all centipedes. The researchers observed 15 captive animals, offered them 13 kinds of prey and analyzed 65 hours of video. They divided actions into 15 behavioral categories, one of which was antenna cleaning.
After each predatory sequence, whether the centipede successfully captured prey or not, the animals meticulously cleaned their bodies. This places antenna grooming in a broader pattern of post-encounter maintenance. The finding shows that cleaning can follow an interaction with prey; it does not show that every grooming bout is triggered by feeding, nor does it establish how often the behavior occurs in the wild.
The same study reports that 95% of 65 prey observations ended with the centipede killing the prey. That statistic describes predation outcomes, not the frequency of antenna cleaning. It should not be read as “95% of centipedes clean their antennae” or “95% of grooming follows a kill.”
Why cleaning may increase after handling prey
In the experiment, cleaning of the masticatory apparatus became especially pronounced after encounters with annelids such as worms. The centipedes repeatedly rubbed their mouthparts against the substrate. The authors proposed that the viscosity of an annelid’s integument and hemolymph could leave material on the mouthparts, making extra cleaning useful.
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That is a proposed explanation for intensified mouthpart cleaning in that particular context, not a demonstrated universal trigger. The study did not prove that antenna grooming removes a specific substance, and it did not show that every centipede cleans for the same reason. A centipede that grooms while resting, walking or after another type of contact may be responding to a different immediate condition.
Evidence from another centipede species
A 2024 account of Plutonium zwierleini in Sicily described grooming in three captive individuals. The animals used the maxillary complex while grooming their antennae, the sides of the trunk and their legs. The observation is useful corroboration that centipedes in another lineage also perform head-assisted body maintenance. The report is limited to those three captive animals and should not be treated as a measurement of grooming frequency for the species as a whole. The publisher’s account is available through the Journal of Natural History.
| Evidence | Animals and setting | What it establishes | What it does not establish |
|---|---|---|---|
| Guizze et al., 2016 | 15 captive centipedes from three South American scolopendromorph species; 65 hours of video | A mouthpart scraping movement along an antenna is a recognized antenna-cleaning behavior; body cleaning followed predatory sequences | A grooming rate for all centipedes, a universal purpose, or the identity of an animal in an unrelated video |
| Natural-history account, 2024 | Three captive Plutonium zwierleini individuals in Sicily | Grooming with the maxillary complex has been observed in another species and can include antennae, trunk sides and legs | How common the behavior is in wild populations or whether every species uses the same technique |
| Online clip described in 2026 | A featured “mint-legged centipede”; species identification not independently verified in the associated account | The visual scene is consistent with antenna grooming | A confirmed species identification or a test of why that individual was grooming |
Do centipedes groom their antennae for sensory reasons?
Centipede antennae are important sensory structures, so it is reasonable to wonder whether cleaning keeps them working properly. However, the observations summarized here do not test that mechanism. They do not demonstrate that grooming improves smell, taste, touch, navigation or hunting success.
The safest conclusion is narrower: centipedes clean antennae as part of their observable body-maintenance behavior. A functional benefit may exist, but assigning a specific sensory purpose requires a study that measures that benefit directly. Do not turn a plausible explanation into a proven one.
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How to tell grooming from feeding in a video
Short clips often omit the moments that make behavior identifiable. These clues can help you interpret a longer recording without claiming more than the footage shows:
- The antenna stays attached. In cleaning, the appendage remains connected to the head and is drawn through the mouthparts.
- The motion is a wipe or scrape. Repeated travel from the base toward the tip is characteristic of the published antenna-cleaning category.
- There is no separate prey item. Feeding usually involves grasping and manipulating another animal or food object.
- The centipede may clean other body parts next. Antennae, legs and trunk surfaces can all appear in a grooming bout.
- The behavior can occur after an unsuccessful hunt. Post-sequence cleaning was recorded whether the predatory attempt succeeded or failed.
These signs are behavioral indicators, not a substitute for species-level identification. A low-resolution video may not show the mouthparts clearly enough to classify the movement with confidence.
What the studies do—and do not—say about health
Nothing in the cited observations identifies antenna grooming as a disease warning or an injury response. The centipedes were described as performing cleaning behavior, and the available accounts do not quantify abnormal versus normal grooming. One clip cannot establish that an animal is ill simply because it spends time at its antennae.
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Conversely, the studies do not prove that every instance is harmless under every circumstance. Persistent rubbing, a visibly damaged antenna, inability to coordinate movement or other unusual signs would require a separate assessment of the animal and its environment. The grooming label describes the movement; it is not a complete veterinary diagnosis.
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Why the evidence has limits
The strongest behavioral definition comes from a controlled observation of captive animals during predatory sequences. Captivity makes repeated viewing possible, but it does not reproduce every condition a wild centipede experiences. The sample includes three species, not the hundreds of centipede species found worldwide, and the experiment was not designed to compare grooming rates between species or habitats.
The second account expands the range of species in which grooming has been seen, but it is based on only three captive individuals. Neither source establishes a single physiological benefit, a universal trigger or a normal grooming schedule. Those limits are why “antenna cleaning” is a more accurate description than a claim about eating, sensory optimization or illness.
What to do if you encounter one
If you see a centipede performing this behavior outdoors, the most useful response is simply to observe from a safe distance. Do not handle a wild centipede to inspect its mouthparts: larger scolopendromorphs can deliver a painful venomous bite. Avoid disturbing the animal while it is grooming, and do not use a brief clip to infer its species or condition.
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The bottom line on the “eating” appearance
A centipede scraping its own antenna with its mouthparts is best identified as antenna grooming or antenna cleaning. The movement has been explicitly defined in behavioral work and observed in more than one centipede species. It can follow prey encounters, especially messy ones, but the available evidence does not assign one universal cause or prove a particular sensory benefit. The antenna is being maintained, not consumed.
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