multiple Desert Horned Lizard questions...

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: I have been unable to locate my HLs ears. Do they have external ears? If so, where are they? If not, can they hear or do they rely on ground vibrations? : They have 3 distinct spots on the tops of their heads. The central one I'm guessing is the extra light sensing eye common to reptiles. (correct me if I'm wrong, it's just a guess) Do the other two do anything special? : My HLs sometimes gag after eating an ant. They open their mouths and slightly stick out their tongues. They don't bring the ants back up, but it doesn't look like a pleasant thing. They don't do it with crickets or meal worms, just the ants. They are harvester ants from Life Studies. Is there a reason for the gagging? : And the question that's really been nagging at me... how do they breathe under the sand? Mine go completely under in the evenings and don't resurface till morning. So I'm thinking they must be able to breathe down there, but don't know how they'd be able to inhale just air and not sand. : I'm sure enjoying my boys. They seem to have adapted to captivity and are getting used to their routine. They get very excited when I come in with the ant cup. I just love the way they wag their tails when they see the ants! : Front to back: Mushu, Godzilla, Hercules, and Tumbleweed. : <img src=http://gallery.kingsnake.com/data/14TumbleHercZillaMushu060202-med.jpg>

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