when my dog has a treat e.g. pigs ear etc, after eating it she licks and chews her leg for a good 15 minutes. i assume it get a bit sticky, BUT she will only do this to her left leg. NEVER to her right!! surely the right must get a little bit sticky too?!!

The spit maybe irritating her left leg when it dries.

yeah could be. its just wierd that its only 1 leg! i think she just has obsessive compulsive disorder!