> From: "Steven Neil Groginsky" <[EMAIL PROTECTED]>
> Sent: Wednesday, January 24, 2001 12:07 AM
>
> Now that I think about it, Leopard Geckos seem to me a little like a monitor
> type of lizard because they walk on their legs with their belly above the
> ground. Of course, I haven't had the opportunity to observe other types of
> geckos.
Lizards (almost?) all have shoulder and pelvic girdles constructed so that
the limbs stick out straight, horizontal to the ground. This isn't very
efficient for load-bearing. Most biomechanics types regard the mammalian
modifications as much superior, especially if you want to be a big animal
and still move fast. :-)
It also gives you a wiggly walk, which makes it hard to breathe if you
don't have a diaphragm, so it's a good thing lizards are ectothermic
and don't need as much oxygen as a mammal or bird.
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