Hello.
After I drag one of the Smiles to the Desktop (like Wallbash.gif) if I open it with Preview (OS X) I'll see 5 diferent frames, one at a time, but if I open it with QuickTime Player, I'll see all five frames one after another, if I make the "movie" one loop, then I'll see it moving.
Depends of the Mail program if you can see it moving in the e-mail (not in Mail for OS X), but if you pull out the window and running with another aplication (QuickTime Player is one of them!) you will be see it moving.