this post was submitted on 14 May 2026
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The behavioural cue of ‘flexible self-protection’ is a way to establish whether an animal feels pain, scientists say

Crickets that received the hot probe “overwhelmingly” directed their attention to the affected antenna – they groomed it more frequently, and tended to it over a longer period of time, he says. “They weren’t just agitated and flustered. They were directing their attention to the actual antennae that was hit with this hot probe.”

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[–] Sanctus@anarchist.nexus 102 points 1 month ago (5 children)

Pain is probably one of the original sensations. I doubt you could find any creature on Earth that doesn't feel it. It is extremely useful for staying alive. I bet we will find out plants even feel some form of pain if we haven't already.

[–] P00ptart@lemmy.world 28 points 1 month ago (1 children)

There's been several studies that say they might, but nothing entirely conclusive. Some say that the smell of freshly cut grass might be the grass screaming in pain and warning the rest.

[–] mech@feddit.org 47 points 1 month ago* (last edited 1 month ago) (2 children)

It's not to warn the rest, it's even way cooler.
The smell attracts carnivores, and tells them "Hey there's some tasty herbivores over here" so they take care of the problem. The grass is snitching on the sheep.

Presumably that's why we like the smell of freshly mown grass, too (but such statements are impossible to prove in evolutionary biology).

[–] xep@discuss.online 16 points 1 month ago

I see, that's why sometimes we have to touch grass, so we can high five it for being a bro.

[–] P00ptart@lemmy.world 6 points 1 month ago

That's cool AF, thanks.

[–] inari@piefed.zip 10 points 1 month ago (2 children)

For plants it wouldn't make much sense since they can't really run away or otherwise stop the pain

[–] anomnom@sh.itjust.works 1 points 1 month ago

There are heat sensitive ones that curl up.

It might reduce surface area or help survive overheating.

[–] Cethin@lemmy.zip 7 points 1 month ago* (last edited 1 month ago)

It depends on how you define "creature" and "pain". There's surely some single cell life that doesn't. Are those creatures? Also, for plants, there's growing evidence that many do release chemicals when hurt, which other plants and animals react to. Is that pain? I'd answer yes to both of those, but both are not hard definitions. They can be argued either way.

[–] thefluffiest@feddit.nl 3 points 1 month ago (1 children)
[–] Whats_your_reasoning@lemmy.world 9 points 1 month ago* (last edited 1 month ago) (2 children)

Pops and cracks from a stressed plant doesn't mean a physical sensation of pain is occurring.

[–] thefluffiest@feddit.nl 5 points 1 month ago (1 children)

A stressed human screaming doesn’t mean a physical sensation of pain is occurring

[–] Whats_your_reasoning@lemmy.world 13 points 1 month ago (1 children)

Humans have nervous systems. Plants do not.

This is a science community. Do you have evidence that plants have a way to transmit or process pain signals? Or are you anthropomorphizing a plant’s reaction to stimuli?

[–] Cethin@lemmy.zip 3 points 1 month ago* (last edited 1 month ago)

It depends on the definition:

a basic bodily sensation that is induced by a noxious stimulus, is received by naked nerve endings, is associated with actual or potential tissue damage, is (such as pricking, throbbing, or aching), and typically leads to evasive action

It does fit this definition. The only part that arguably doesn't fit is the "characterized by physical discomfort" part, but that's characterized by, not defined by. It isn't necessarily required, and I can see an argument to say it's true for many plants too.

To say it's definitely not pain I think is far too strong a belief. I can go either way on it. I would lean towards calling it pain, but it's far from clear.

As you said, this is a scientific community. One of the most important things to science is being skeptical of our biases and pre-existing ideas. Claiming they don't feel pain for certain is not that.

[–] CarpalTunnelButt@sh.itjust.works 3 points 1 month ago (1 children)

I've seen videos of single cell organisms, and even they look like they feel pain when stabbed or eaten.

[–] Sanctus@anarchist.nexus 4 points 1 month ago (1 children)

On the contrary I've seen one where one cell passes straight through another cell, making a hole. The cell that was passed through did not react at all and kept about its business afterwards, even regaining shape. Wild.

Crazy, I think I've seen that one too !