Why do dogs tilt their heads? New study offers clues
science.org
science.org
These are border collies, a working dog designed to interact with a human handler. Take a look at something like a cane corso or great pyrenees. They don't head tilt nearly as much because such close communication is not what we have, through breeding, designed them to do.
Steven Pinker on the evolution of the shrug:
Certainly various breeds have been bred for different purposes, and are very good at them.
I hesitate on this explanation in this specific case just because the reason that we think head tilting is cute in dogs is because we also do it - and IMO we also do it when we're remembering something successfully - so I'd check for it in non-domesticated animals (wolves) and in other mammals.
Coming up with a definition of intelligence that doesn't need an observer/understander is an interesting exercise; kinda demonstrates my point inasmuch as the word stops taking on a unified meaning and we find ourselves grasping around for the real Y-axis.
That said I think the head-tilting somehow increases cognition for a second, and the social signalling is an added benefit. Maybe it's a blood flow or cerebrospinal fluid thing. Big brains use a lot of blood oxygen and glucose while they're working. But that's just me BSing.
Regarding the cane corso-- fighting/guard dogs don't do the head tilt, but they're not gonna learn the words either...
Also, dogs evolved to communicate with dogs for ~(10E7) years, then learned to communicate with humans for ~(10E4) years. I think they mainly speak dog.. well, not dog, but puppy; the common path of mammal domestication being through juvenilization.
It seems more likely they do it for concentrating during memory recall
We think it is cute today. Did humans think it is cute thousands of years ago? Can you assume that humans that were domesticating wolves thought any animals were cute or attractive in some form?
If you ever work with computer vision, rotating an image a little, lets say tilt, can vastly increase or decrease your algorithm's performance.
For example: early face detection algorithms were looking for T zone in your face from eyebrows to nose. (cheeckbones are generally brighter areas) However, those old algorithms were very bad at if the image is 180 degree rotated (T zone is not T anymore). Dont have to be 180 45 degree is enough for most face detection algorithms.
In neural nets, artificial intelligence practices like augmenting data, rotate the image a little and give the same image as an input data namely Augmenting data improves algorithm performance. In my opinion the dogs multiply the input by rotating or tilting their head so that autmatically augmenting data!!! So that they can detect better whatever they were looking before.
Computer scientist keep inspiring from nature but maybe its time to explain some phenomena with computer science methods. Researcher force themselves to find a new thing in computer area, maybe they go beyond nature sometimes unintentionally.
My intuition is that head-tilting behaviour is more analogous to how we (humans) look up and the to left/right when concentrating. That feels less like augmenting the visual data and more like blocking visual input while we focus compute on recall and more complex thought.
It's a common tell for lying in general, not just bluffing in poker.
Wouldn't be the first time evolution used the trick. The eyes, in mammals at least, constantly wiggle even when fixed on an object. If the eyes stop moving entirely your field of vision fades out after some seconds. https://en.wikipedia.org/wiki/Saccade
Your reference is very interesting for me because in computer vision we try to locate local features and try to match these local features, so that 3D correspondence can be extracted from multiple images which called structure from motion (SfM). Now I know, humans (and animals) also do the same thing!
Here is the source they reference: https://vcahospitals.com/know-your-pet/why-dogs-tilt-their-h...
This got me curious about how we can roughly determine if a sound is coming from above or below us even without tilting our heads. A quick search led to this interesting but somewhat open-ended stackexchange answer:
> Localization in the vertical plane (elevation) is less well investigated. As far as I know it is the shape of the outer ear (pinna) that transforms the frequency characteristic of incoming sound. In terms of directional hearing it is thought that sounds coming from above lead to a different head transfer function than sounds from below. This means that localization can only be accomplished when the sound has a particular familiar characteristic that is slightly disturbed in the frequency domain when encountered at different angles of elevation (Hofman & Van Opstal, 2003). [1]
From this, it seems like the pinna is shaped in such a way that it filters audio differently depending on whether it came from above or below? Can anyone who has more experience with ears confirm or clarify this?
[1] https://biology.stackexchange.com/questions/53207/how-we-can...
It's as if the articles were written about different things.
It's always linked to how focus the dog is something. It's also when you repeat multiple time the same command that you trigger this behaviour. Like they focus on it.
Pardon you?
what was I instinctively read...
Yes, it is. "Complete concentration" or shifting ears this way and that way to better assess where sound comes from? I do something similar, when trying to localize the source of some odd sound, though I do more rotations around the vertical axis, and less around a horizontal ones. But humans more visually inclined species, so we mostly rely on eyes when searching for a source of a sound (it may go funny, when you misattributed sound, and then corrected a mistake, it feels like the sound instantly relocated from one place to the other).
Or maybe doggie tilting its head is trying to see whould your face look better if tilted?
Or it signals about its concentration on sounds, so other members of the pack kept quiet?
Or (a hypothesis attributed to a cat in some fictional book) doggie tries to hide how stupid it is? I like this one, because my dog acts this way, when I talk to it, whining on the perils of a working man in an inegalitarian society.
But the dog in the article is doing the behavior after the sound is finished. There is nothing more to hear.
The dog is clearly processing the noun and preparing to go search for the objective and retrieve it.
When dog needs to think it may tilt its head, but it wouldn't help to think. We might try to devise a hypothesis that it shakes blood with oxygen and glucuse rendering them more accessible to neurons, but I wouldn't buy it.
It is either a late attempt to catch the sound in its fullness, or it is a some kind of a signal to others. Or both.
My guess that it is a fixed action pattern of canines allowing them to locate a source of a sound, but it was repurposed by interactions with humans as a signal, that may be read as "Did I hear a learned noun?" With the following "Yeah, I see your expectant look, it seems I heard. Ok! I'm on it!".
It gives an idea of another experiment. To teach dogs to get visual commands, like given by gestures, pictures, or anything else they could digest. And to see would they tilt their heads receiving such commands. If they wouldn't then the tilting is nothing more than their way to respond to an important sound. I didn't tried it, but judging by my experience of interacting with dogs, they wouldn't tilt their head, if the situation doesn't involve sound processing.
It's not particularly good science to assume the universe is limited to what humans are good at perceiving. I'm sure there are some potential publications in this somewhere.
Moving the head around (from side to side) would make more sense to establish the direction of a scent. Then the strength could tell the dog the appropriate distance a smell is away too.
But if the head tilt was about trying to get a better perception of the world from a smell point of view, they wouldn’t be so consistent in their head tilts. The article said that dogs tend to tilt their heads in only one direction (left or right). And that the direction was always consistent for that individual dog. If they were trying to map out smells in 3D space, they’d move their heads around in more varied patterns.
That said, I do think your larger point of not assuming dogs (or any animals) have the same perception of the world as we do is correct. For example, we would identify a toy based almost entirely on how it looks. But a dog would definitely also take into account how it smelled. The same theory of "concentration" to explain the head tilt would be valid, regardless of what the dog is trying to remember -- look or smell.
Source: had a beagle and an aussie
Amusing to see this play out again in the comments here
That's always been my hypothesis.
Dogs have two ears, spaced horizontally apart such that triangulation can be used to determine the origin of the sound by exploiting the small time difference in time for the sound to reach both ears.
But vertically speaking the ears are in the same position. So to be able to better judge the vertical position of the origin of the sound, they title their heads in order to place the ears apart on the vertical axis.
In my case, I do it after I have heard or seen something surprising or puzzling.
I do it while I am processing the information. It's a way to signal to the person or people I am with that I am offline i.e. not receiving further input through my eyed and ears whilst I am processing the data.
So this seems to contradict the findings of the study here where they seem to associate the head tilt with intelligence,
I've always interpreted head tilt as confusion.
But of course that's just a single data point.
Ah, border collies. Just wanna collect em all.
They have the sweetest temperament, though. I was always a lab person until we got a rescue collie, and I just fell in love with them.
They are pure intuition. And they just want to please you and have fun (which for them means working non-stop doing stuff). Their desire to please makes them pretty easy to train, it's just a matter of being consistent, which we are not. But they don't cause trouble in general once they know what displeases you because they really just want your approval so badly.
In the hands of a more qualified trainer, our female would be an insanely talented agility or herding dog. So fast. So attentive. So sensitive.
It's like she views her entire purpose as eradicating the yard of squirrels. But if I put her outside while I'm working, she comes back immediately to the door and waits for me to watch her chase the squirrels.
She also does the head tilt nearly every time I talk to her.
The pleasing temperament is why we went with a golden retriever; my girlfriend wants to train her as a therapy dog. But training has been difficult, due in no small part to how inconsistent we've been (and how rambunctious the dog is). We also can't get her to entirely stop play biting, which is frustrating. I love her to bits and would do anything for her, but I don't think I'll ever get a puppy again.
But having had dogs that we've raised from puppy and ones that we've adopted, I find that the puppy-raised ones were more emotionally attached.
Labs are notorious chewers, and they have a long adolescence (3 years!). And then the chewing usually stops. They're people lovers and snuggly and have lower energy, so I can see them being great therapy dogs, just might take a bit.
When we had a dog that chewed more we got her deer or elk antlers from the pet store and she chewed those to smithereens. Kept her busy and prevented her from going after our things.
I definitely feel bad about that. Our last dog was a rescued golden retriever who passed away around the start of the year, and we had our hearts set on another golden. We felt uncomfortable enough with purchasing a dog that we donated the same amount spread out to a few animal rescues, but I still feel a bit guilty.
But we got our last dog when she would’ve been about 5 (she was a stray! How was the sweetest golden in the world a stray!), so we skipped all the puppy and adolescence. We underestimated the puppy stuff.
Antlers are a good idea. We were doing pressed rawhide but she started choking on them for some reason.
Our previous collie was a rescue, and she died young (like 6 years old, poor thing) and we were so heartbroken my wife went out and got a puppy about two weeks later.
We also had mixed experiences with rescues. They can be hard to deal with and in general most wouldn't even talk to use because we live on a farm without a "fenced backyard" (you try fencing 6 acres)... Except it's actually heaven here for a dog and we are good at taking care of them.
But he's easier to wear out than her. Frisbee for a half hour and he's done. She's impossible to wear out. And thus you can see why they'd be invaluable on a sheep farm...
Also, I have chickens and they frequently tilt their head when looking at me.
Just some more anecdata. :)
As another BC owner I approve of that message.
We have a young male and we’ve also noticed the difference in behavior compared to their female counterparts, the latter seem to be following more “to the letter” the behavior usually associated with a BC.
And probably did evolve to communicate that thinking pose to humans. Its a little bit of an "I've almost got it, can I get another hint?" kind of pose.
You can imagine the disappoint when talking about socks, talks, locks.
Talk: https://www.youtube.com/watch?v=BG9GBNr7kFk
Sock: https://www.youtube.com/watch?v=6cpffNd2GaA
Lock: https://www.youtube.com/watch?v=YPN_94VMk8Q
Sock and lock sound similar to me, and so do walk and talk. But walk/talk and sock/lock sound quite dissimilar.
We've adopted "treaties???" for rewarding our current dog and it works doubly to get her to distill that energy for a little bit.
There is a recent trend of saying your dogs favorite words while on the phone.
Lots of head tilting in all these videos.
Dogs are clearly interested/curious.
Nice to see you my old friend, now out of the way, I need whole 2 data centers to test this model of the milky way that I’ll use to predict what global temperatures would be if Hitler won, the testing performed by a singularity itself on loan from MetaFacebook5000, good thing we were able to leverage the entire country of Luxembourg to fund this, along with NIH money (so long as we promised to kick a puppy).
Was kind of like yawning trigger / thinking of lemon - salivating trigger kind of experience.
I assume the control group was also border collies? Otherwise they might have instead discovered that border collies tilt their heads more often (which would also be interesting of course).
Have you never tilted your head when you hear (or even just think about) a piece of interesting / surprising / confusing information?
Now, I don't know why _humans_ tilt our heads, but it has always been clear to me with my dogs that they are doing the exact same thing. They're pausing to think a little harder in response to something new.
I tilt my head when I'm trying to make sense of a word I heard, other people do it, anime characters do it.
I've found I tend to tilt my head when I'm trying to find a different angle mentally, alone and when interacting with other people.