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tetrapods standing



or quadrapods or whatever.  elephants sleep very little as they are always
trying to find food (PBS).  However horses who have some leasier time sleep a
lot, standing up.  But they lock their legs either at the knees or anckles,
knees I think.(really old PBS). So one might look at how much our beasties
need to munch and how fast they must run.

paul