Hi Matthew,
 
With mine, waking-up-shaking is a shivery, almost-like purring stage that
doesn't last long...but when my Shasta had insulinomas, her shaking was
different--she would be walking along and all of a sudden stop and wobble
and shake her head up and down.  Poor baby--she looked for all the world
like one of those wobbly critters with the bobbly heads, that people put
on the back shelves of their cars.
 
She would also seem a little "out of it." It wasn't really the same sort of
shiver-shaking as the waking up ones--much bigger movements and not seen
right after awakening.  I'm sure others have witnessed the same thing.
 
Best to you,
 
Kate, Monty and Madison
[Posted in FML issue 2593]