it's a good animation Mighty ;D but I saw some little mistakes ^^'
-it's ok but you should did more frames...as I said to diego, don't you see that the wolf (or the dog) looks rigid? it has to look elastic, natural...look-->
http://fc32.deviantart.com/fs34/f/2008/290/8/e/running_wolfeh_by_Saske_Italian_Wolf.gif (I know that it's ugly) it looks elastic right?
-the right paws are too short ^^' and the body is a bit long ;P
if you want, I have a tutorial for this animation =) nice job anyway^^