My greyhound is 6 years old (May 09) so he's not old really...
But at meet and greets when standing for any length of time his hind legs shake
A first thought was is he cold? But no his ears are warm and he does it on a hot day.
Second thought is he excited? Don't think so as he doesn't get excited unless he is running to the sofa
Third thought could it be a trapped nerve?
Fourth thought am I being silly and getting wound up about something and nothing?
*Sigh* What d'ya think guys? Truthfully good or bad please.........