this post was submitted on 22 Nov 2025
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Yes I know about serotonin etc, but why does the stimulus of petting a fluffy critter evoke that response in the first place?

My personal uninformed armchair theory: We're apes, and apes pick bugs out of each other's fur to bond as a group. But when our ancestors forsook the trees for the plains, we shed our fur to gained sweat glands in order to become the ultimate persistence hunters. Yet the urge to groom remains. We have no fur and we must pet.

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[–] Brkdncr@lemmy.world 75 points 15 hours ago

Nurture is built into our dna. Our species exists because of our ability to socialize with others even outside of our species. Many animals have become domesticated as a result.

[–] JoeKrogan@lemmy.world 35 points 15 hours ago (1 children)

Its not just humans. There are many cases of different animals taking care of the young of another species.

[–] shalafi@lemmy.world 6 points 11 hours ago

Seems to be mostly a mammal thing. OTOH, I've seen videos of dumb-as-fuck chickens raising kittens and completely different bird species.

[–] Nemo@slrpnk.net 33 points 12 hours ago (1 children)

much soft, very purr, so cuddle

[–] daggermoon@lemmy.world 7 points 11 hours ago
[–] Manjushri@piefed.social 28 points 15 hours ago (1 children)

I've always assumed that it calls back to the part of our brain that was triggered in mommy and daddy apes soothing their young.

[–] undefined@lemmy.hogru.ch 7 points 14 hours ago

I think I’ve seen research supporting this but of course I can’t remember where.

[–] Formfiller@lemmy.world 20 points 13 hours ago (1 children)

It’s mutually beneficial and releases oxytocin the love hormone

[–] higgsboson@piefed.social 2 points 9 hours ago

This is it. I shouldnt have had to scroll this far down.

[–] LORDSMEGMA@sh.itjust.works 15 points 16 hours ago (3 children)

Tbf I'll pet any soft surface, regardless if it's attached to an animal

[–] BlueKey@fedia.io 7 points 14 hours ago (1 children)

Maybe you want to make an exception for mold.

[–] LORDSMEGMA@sh.itjust.works 2 points 14 hours ago

I am not a clever man

[–] toiletobserver@lemmy.world 7 points 15 hours ago

sigh, unzips

[–] Mk23simp@lemmy.blahaj.zone 3 points 14 hours ago
[–] Rhynoplaz@lemmy.world 11 points 15 hours ago

For me it's bonding with the animal. They like it, I like it, and we're just chill together.

[–] Kolanaki@pawb.social 8 points 13 hours ago* (last edited 13 hours ago) (1 children)

I know it releases that same chemical in the brain that is released between a mother and baby when breastfeeding. I forget the chemical name... I keep having "oxycotin" pop up in my head, but that's a painkiller. 🤔

[–] Hegar@fedia.io 7 points 13 hours ago (1 children)

Oxytosin? Not sure on the spelling

[–] Kolanaki@pawb.social 10 points 12 hours ago (1 children)

Oxytocin. That's it. Same letters as the painkiller, but in a different order. That's why I kept thinking of the painkiller 🤣

[–] Hegar@fedia.io 7 points 12 hours ago (2 children)

Love is the ultimate painkiller?

[–] Kolanaki@pawb.social 6 points 12 hours ago (1 children)
[–] Hegar@fedia.io 2 points 12 hours ago

Edit: i didn't realize the watermark completely obscured the word conundrum 😭

collapsed inline media

[–] Adderbox76@lemmy.ca 3 points 12 hours ago

That's the hit song from my doctors weekend garage band.

[–] ininewcrow@lemmy.ca 8 points 14 hours ago (2 children)

I'm sure alien species with more intelligence, strength and ability than us might do the same with us if they landed on our planet.

[–] swab148@lemmy.dbzer0.com 6 points 14 hours ago (1 children)

I'd cuddle with an alien, sounds dope

[–] ininewcrow@lemmy.ca 3 points 13 hours ago (1 children)

Then when you 'come of age' ... you get entered into the Human fights where aliens get to bet on winners and losers.

[–] swab148@lemmy.dbzer0.com 4 points 13 hours ago (1 children)
[–] burntbacon@discuss.tchncs.de 1 points 9 hours ago

Eh. We already have the ufc, boxing, all sorts of martial arts in the olympics, etc. Would those people keep fighting if the rest of humanity received a pampered existence for their efforts? Maybe the aliens will only take a portion of the population that consents.

[–] early_riser@lemmy.world 3 points 13 hours ago (1 children)

"I'm a person and I have personal space!" --me if this ever happens.

[–] ininewcrow@lemmy.ca 1 points 13 hours ago

Kang: .... very well then ... (throws you into your own personal cage)

[–] meep_launcher@sh.itjust.works 7 points 10 hours ago* (last edited 10 hours ago)

I would also consider the evolutionary advantage of having pets. Dogs help hunt and herd and cats help with farm pests that could spread disease. It just makes sense that societies that accepted that help and encouraged the symbiotic relationship would fare better than those that didn't.

Also I hope the news is right: racoons are next on the list. We need to pet the racoons. It's a matter of national security.

[–] ArcaneSlime@lemmy.dbzer0.com 7 points 13 hours ago

Well personally, my feelings on this subject matter can be condensed down to a few words:

"I love kitties."

[–] burntbacon@discuss.tchncs.de 5 points 9 hours ago (2 children)

As others have said, it's the oxytocin. You can measure blood serum levels of it in both the human and the dog (that's the study I remember, probably other mammals would get the same effect) and see it rise when petting occurs. Oxytocin is the 'love and be loved' chemical, and that's a good feeling that your brain will desire to get more of. Classic operational conditioning (as opposed to the classic classic conditioning).

Now, as to why oxytocin is released when the petting is going on? Probably it's just 'leftover' stimuli chains that created the familial bonds when you are held as a baby. It's not deleterious, so it wasn't selected against in evolution, and in many ways it is beneficial, so it's likely that it was a trait that was selected for.

[–] pmk@lemmy.sdf.org 1 points 5 hours ago

I have not been able to find this again, but I swear that I once read a study where they had measured oxytocin levels while stimulating a badgers nipples. I just want to see the person who did this. Anyways, it worked as expected, and they had some data on which frequency worked best. Iirc it was one slow stroke every 1.5 seconds. Which is kind of the pace I pet cats to relax.

[–] lennybird@lemmy.world 1 points 8 hours ago

Relevant documentary on The Science of Touch I watched a few years back. I think they mention force and speed matter in stimulating oxytocin.

[–] amino@lemmy.blahaj.zone 4 points 12 hours ago

it's Mutual aid by Kropotkin all the way down

[–] StillAlive@piefed.world 4 points 14 hours ago

🐸Feels good, man🐸

[–] WhatGodIsMadeOf@feddit.org 3 points 12 hours ago

I think it's oxytocin people get from touch?

[–] Korhaka@sopuli.xyz 2 points 13 hours ago

Symbiotic relationship. Good kitty kill mice that would eat our grain.

[–] pishadoot@sh.itjust.works 1 points 9 hours ago

Because it's unashamedly love