does your snake yawn?

[Vanan]

Here's a lil experiement for you "non-believers". Take a look closely at a snake "yawning". See if the lungs actually expand together with it. Mammalian diaphragm muscles contract and expand during yawning.

[wyz]

Never !!



WYZ

[lostwithin]

Invictus, I didn’t mean too start anything here, I was just sharing some information that I happened too have. And I’m still looking for those references, I also state that nobody else was wrong because I don't know if they are or not, I have already put out there what I have learned, No need too believe me if you don’t want too. I do have too ask though, why does it bother you too have other ideas stated? It’s just that much more information for everybody too learn.

wyz, Great pic,

Devon

[JD@reptiles]

i dont think he likes being wrong or likes to listen to somone 17 years old.

[Katt]

Hey, yawning to increase oxygen flow isn't necessarily true.

Here are some links about yawning and "the increased oxygen flow" theory, that discredit this theory.

http://faculty.washington.edu/chudler/yawning.html
http://www.scientificamerican.com/as...FB809EC5880000
http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract

Now before people spout off about "wild assed theories" and not backing up claims, let's see some back up from you.

Yawning doesn't have to be triggered by a single event: be it increasing available scent molecules to the roof of the mouth or adjusting misplaced jaws.

[treegirl]

...wish I would've seen my trantula yawn.....hehehe

[Invictus]

Whether they do it to increase oxygen flow or not, they do yawn. It's a simple mechanism of nature. And yes, I have observed my snakes' lungs expanding when they yawn.

i dont think he likes being wrong or likes to listen to somone 17 years old.

No, I don't like myths, theories, and garbage being propagated when the answer is so simple. And so what if I googled the answer? At least I did that much instead of coming up with insane theories about why they do it. Read the rest of the article I posted. It's quite informative. If you care to actually get INFORMATION, that is. Nice jab though Jordan. I've never taken a personal jab at you, I don't know why you decided to take one at me.

[Vanan]

Whether they do it to increase oxygen flow or not, they do yawn. It's a simple mechanism of nature.

Of what purpose is what the argument's about. Theories or not, facts gotta start from somewhere.

[JD@reptiles]

trying to say i am wrong i took that as a jab.

"At least I did that much instead of coming up with insane theories about why they do it"

what i posted WAS NOT A THEORY.

Google isn't the best for everything considering a lot of stuff is made up now days.

nothing i said was a myth. im glad you see your snake yawn, believe what you wish. all i did was just made a post, sorry if it goes agianst your beliefs.

[Invictus]

Sorry, but a quote like this:

If they should bump there jaw on somthing or maybe after a drink somthings not in the right place, they will adjust there mouth.

????? Since when do they dislocate their jaws when they drink ????

This quote seems to be refuting the fact that they yawn in the first place. The question posed was not "why do snakes yawn" it was "do snakes yawn?". You, and a couple of other people seemed to deny that they do. That's what got my feathers ruffled, because the FACT is, they do yawn.

And sure, a lot of stuff is made up... that's why I posted an article written by someone who has a PhD. I don't just believe everything I read, I consider the source. And since studies are now contradicting the DECADES-old belief that the purpose of yawning is to increase oxygen to the blood, I guess we'll never know why snakes do it until we know why humans do it.

Do you see my point?

[lostwithin]

ok, I didn’t just through it out there, I added simple facts too show how it works I some simple Biology about the Jacobson’s organ, Now that doesn’t prove it too be more then a theory but your little quote didn’t prove your explanation too be a theory either, And I will hopefully find exact references I'm sure in the end there is more then one reason for a wide opened mouth in a snake. But I was far from lying or even spreading a myth. Its simple biological function, anybody truly interested in this subject can look it upon there own, no sense starting fights about it online.

Devon

[Vanan]

How's this folks. I just fed one of my adult female hogs and right after she got the meal down to her belly, she gaped her mouth and moved her jaws side to side. Now would you call that a yawn or what? I guess I need an article from Copeia or something to convince you Ken.

[Ron]

OMG this thread is too much.

My snakes seem to stretch their mouths open from time to time; are they actually yawning the way we do? Who knows....who really cares?

[lostwithin]

I think the word "yawn" is causing a problem, a wide gaping mouth is what im talking about, yes If snakes actually yawn then they not only would be opening there mouths too full gape, but also taking in as much air as possible in which case the purpose of doing so would be too increase the O2 in the body. And stretching the gape again too the full capacity after dislocating the jaw after a meal or strike would have the purpose of re-aligning it. In my case I am simply stating that at one point in my studying of the species I came across information stating that IF a snake picks up a sent that he needs a clearer reading of what is there they will open there mouth too a open gape exposing the sensors of the Jacobson’s organ directly too the air too pick up more of a sent.
There is no need for all this childish nonsense it completely defeats the purpose of sharing information.

Devon

[Vanan]

Here's something which discredits the yawning to increase oxygen flow.

Greco et al. ( 1993) found that most of their survey respondents believed that too little oxygen or too much carbon dioxide were the main causes of yawning (i.e., the respiratory hypothesis). At best, the respiratory hypothesis is incomplete-for example, both boredom and seeing other people yawn are potent causes of yawning. Breathing faster or more deeply is a more effective way of increasing oxygen intake and expelling carbon dioxide than a single deep inspiration, especially since a period of apnea usually follows a yawn (Hauptmann, 1920; Lehman, 1979). Nevertheless, the hypothesis has been widely held since its mysterious origins in the 19th century (Dumpert, 192 1 ).

The article can be found here. http://webperso.easyconnect.fr/baill...er-yawning.pdf

are they actually yawning the way we do? Who knows....who really cares?

I guess some of us do, hence the purpose of this thread. If you don't care, don't read further.