It's kind of like a paste, more noticeable with Raisins, and they don't seem itchy.
Check out their pictures in this thread: http://www.pets.ca/forum/showthread.php?t=65503
, and you can see it if you look closely at their inner ear.
"If you are a dog and your owner suggests that you wear a sweater. . . suggest that he wear a tail."
Vali (American Bulldog)
Artiro (Cane Corso)