After a heated probe touched one of its antennae, a cricket did something researchers hadn’t quite expected: it kept coming back to that exact spot. Again and again, it groomed the affected antenna — not frantically, not randomly, but with a focus that was hard to dismiss as coincidence. That small, repeated gesture was enough to make scientists stop and look more closely.
A tiny, deliberate act that stopped scientists in their tracks
The study, published in Proceedings of the Royal Society, was straightforward by design. Researchers randomly assigned crickets to one of three groups: some received a heated soldering iron applied to one antenna, others received the same probe left unheated, and a third group served as an untouched control.
The soldering iron was set to 65°C — hot enough to be, as Associate Professor Thomas White of the University of Sydney puts it, “a bit unpleasant,” but not enough to cause lasting damage. The threshold was deliberate. This wasn’t about injury. It was about discomfort.
What followed is what drew attention. Crickets that received the hot probe “overwhelmingly” directed their grooming toward the specific antenna that had been touched, returning to it repeatedly over an extended period. “They weren’t just agitated and flustered,” White said. “They were directing their attention to the actual antenna that was hit with this hot probe.”
The other groups behaved very differently. Crickets given the unheated probe were briefly unsettled, then quickly returned to normal — a contrast that’s difficult to explain away as random noise.
What scientists actually mean when they say ‘pain’
Pain, in the scientific sense, isn’t simply a nerve firing. White describes the experience as a “longer, drawn-out, ouchy feeling” — something fundamentally different from a hardwired reflex. A reflex is automatic and immediate; pain, as researchers understand it, carries a sustained, subjective quality that lingers well beyond the initial stimulus.
Because pain can’t be directly observed in another creature, scientists rely on behavioral cues. One of the most telling indicators is what researchers call “flexible self-protection” — when an animal directs sustained, targeted attention to a specific body part over time. It’s not generalized distress. It’s focused, deliberate, and localized.
White draws the comparison plainly. “You see a dog limping, or licking its paw, or holding one particular arm — of course, we’d immediately say, ‘well, that’s in pain, it must be sore.'” The cricket’s behavior fits that same pattern. The question the study quietly poses is why we don’t extend the same inference to an insect doing essentially the same thing.
Insects are not ‘just little machines’
The cricket findings don’t exist in isolation. A growing body of research has been steadily undermining the idea that insects are simple, stimulus-response automatons. Studies have shown that bumblebees engage in what looks like play behavior — rolling colored wooden balls with no apparent purpose beyond the activity itself — and stressed bees have shown signs of a pessimistic cognitive bias, suggesting something closer to emotional states than pure mechanical processing.
The scientific community has been taking note. The New York Declaration on Animal Consciousness, signed by more than 500 scientists and philosophers, acknowledges a “realistic possibility of conscious experience” in all vertebrates and many invertebrates, including insects. That’s no longer a fringe position.
Individual feats of insect cognition are equally striking. Bogong moths navigate hundreds of kilometers at night to destinations they’ve never previously visited — a capacity for spatial reasoning that would impress in any species. “These aren’t just little machines,” White says. “They have rich capabilities to learn, to make complex decisions and trade-offs.”
Part of the problem, researchers suggest, is us. Humans are, as Associate Professor Kate Umbers of Western Sydney University puts it, “notoriously not very good at appreciating things that are different from them.” The physical dissimilarity of insects — their size, their extra legs, their alien body plans — creates a perceptual gap that makes empathy harder to extend, even when the behaviors might warrant it.
Why crickets, specifically, are at the center of this debate
Most prior research into insect pain and cognition has focused on bees. This study shifts attention to a species with far more direct commercial relevance: crickets are farmed globally in numbers ranging into the billions and trillions, raised for human food, animal feed, and research purposes. White calls them “the chickens and cows of the insect world.”
That framing matters. Questions about the welfare of farmed animals have historically followed recognition of their capacity to suffer. If crickets can experience something meaningfully like pain, the implications for how they’re raised and processed become harder to set aside.
Animal welfare law is already moving in this direction, though not yet for insects. Some countries have extended legal protections to cephalopods and crustaceans, recognizing their sentience in ways that carry practical consequences for how they can be treated. Umbers notes the evolutionary logic: “Insects are a crustacean on land — they share a common ancestor.” If crustaceans are gaining protections, insects may not be far behind.
A reason to pause before reaching for the bug spray
Researchers involved in and adjacent to this study are careful not to overclaim. The findings are suggestive, not conclusive. But they point in a direction that’s increasingly difficult to dismiss.
Umbers hopes the study can do something simple: prompt people to look past the physical differences between humans and insects, and allow the empathy that comes naturally toward other living things to extend a little further. The cultural tendency to exclude insects from moral consideration has less scientific backing than it once did.
If crickets are capable of having better and worse lives — and this research suggests they might be — that carries weight. Not just for farming practices and welfare standards, but for the broader question of which creatures we decide deserve our consideration. Science keeps finding richer inner lives in places we assumed were empty. The cricket tending its own sore antenna is a small thing. But small things have a way of changing how we see the world.