Reptile & Amphibian Forums

Also, I'm assuming that they don't have vocal cords - is this correct?
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I believe they force air through the Glottus and no they don't have vocal chords. Most reptiles don't. The only species of lizard that can truly make vocalizations are Geckos.
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Lucien

1.1 Columbian Redtail Boa (BCI)(Sutekh and Isis)
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Yes! I was right. Thanks.
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Check Out My Albums

1.0 Ball Python
"Aragorn"

1.0 Kenyan Sand Boa
"Gimli"

1.0 Mexican Black Kingsnake
"Indigo"

1.0 Saharan Sand Boa
"Frodo"

0.1 Rough-Scale Sand Boa
"Arwen"

0.1 Australian Cattle Dog/Pointer
"Kira"

I can't believe I forgot glottis... 'cause I've read there's a pine snake with a specially constructed glottis to produce a very loud hiss.
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Eryx - All the fun of a boa in a convenient pocket size!

All Pituophis have this little cartilaginous ridge in front of their glottis so when they exhale forceably, it is like blowing hard over the edge of an index card.

There is a nice photo of this structure in front of the glottis (and a recording of a pinesnake hiss) at this website -

www.snakesandfrogs.com/scra/snakes/pinesk2.htm
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Chris Harrison