I wouldn't debate visiting.  If I ever had a concern, I went to the vet.  I've never seen that happen in my life.  I would be concerned, but I don't know if it would be something wrong or not.  It isn't normal.  That's for sure.  Good luck and let us know if you learn anything new.     
				__________________  Karen     Kacee    Muffin 1991-2005 Rest in Peace My Little Angel     |